Find the value of sin 15 using compound angles.

Find the value of (sin 15o ) using compound angles.

by

1 Answer

Answer :

Solution:

image

image

by

Related questions

The determinant of a 2 x 2 matrix is 50. If one eigen value of the matrix is 10, the other eigen value is ________.

Description : The determinant of a 2 x 2 matrix is 50. If one eigen value of the matrix is 10, the other eigen value is ________.

Last Answer : https://youtu.be/1WrgXbDX1K4

The horizontal angles from the boat between A and B and B and C, the stations on the shore are 1 2. The distances AB = L1 and BC = L2 2 at C between the boat and station B between A and C at B). (A) 1 2) = (L2 1/L1 2) = K (B) t 2 = 360° - 1 2 (C) 2 = sin /(K + ) (D) All the above

Description : The horizontal angles from the boat between A and B and B and C, the stations on the shore are 1 2. The distances AB = L1 and BC = L2 2 at C between the boat and station B between A and C at B). (A) 1 2) = (L2 1/L1 2) = K (B) t 2 = 360° - 1 2 (C) 2 = sin /(K + ) (D) All the above

Last Answer : (D) All the above

The Matrix has Complex eigenvalues and vectors

Description : The Matrix has Complex eigenvalues and vectors

Last Answer : The Matrix has Complex eigenvalues and vectors

For the given orthogonal Matrix, the inverse is,

Description : For the given orthogonal Matrix, the inverse is,

Last Answer : For the given orthogonal Matrix, the inverse is,

determinant of 2 by 2 matrix

Description : determinant of 2 by 2 matrix

Last Answer : determinant of 2 by 2 matrix

Linear algebra problem: Rank of a matrix

Description : Linear algebra problem: Rank of a matrix

Last Answer : Linear algebra problem: Rank of a matrix https://youtu.be/b7tPLA3_y6Y

Linear algebra problem: The determinant of the matrix

Description : Linear algebra problem: The determinant of the matrix

Last Answer : Answer : Linear algebra problem: The determinant of the matrix

The lowest eigenvalue of the 2x2 matrix

Description : The lowest eigenvalue of the 2x2 matrix 

Last Answer : Linear Algebra Problem The lowest eigenvalue of the 2x2 matrix https://youtu.be/QatcRTzF7EA

Linear Algebra Problem the solution to the system of equations

Description : Linear Algebra Problem the solution to the system of equations

Last Answer : Linear Algebra Problem the solution to the system of equations https://youtu.be/y_FlupirxZM

Problem on eigen values property

Description : Problem on eigen values property

Last Answer : Problem on eigen values property https://youtu.be/DoSTY-bBubQ

Linear Algebra Problem 2

Description : Linear Algebra Problem 2

Last Answer : https://youtu.be/zAPDYO0q-9w Linear Algebra Problem 2

Linear Algebra Problem The product of eigen values of the matrix

Description : Linear Algebra Problem The product of eigen values of the matrix

Last Answer : Linear Algebra Problem The product of eigen values of the matrixhttps://youtu.be/JGcynUZFQ78

Can you answer this question? X + X + X = 30 X + Y + Y = 20 Y + Z + Z = 17 X + Y + Z = ?

Description : Can you answer this question? X + X + X = 30 X + Y + Y = 20 Y + Z + Z = 17 X + Y + Z = ?

Last Answer : X+Y+Z =21 10+05+6=21

5(4+1) ÷ 5(5) = ?

Description : 5(4+1) ÷ 5(5) = ?

Last Answer : 5(4+1) 5(5) = 20/25 You can simplify the expression by first performing the operations inside the parentheses. So, 5(4+1) becomes 5*5 which is 25. Then 25 5( ... of operations is important, you have to perform the operations inside the parentheses first, then the multiplication and division.

If we tossed simultaneously two coins. Find the probability of exactly one tail.

Description : If we tossed simultaneously two coins. Find the probability of exactly one tail.

Last Answer : If we toss two coins simultaneously,there are four possible outcomes HEAD-HEAD  TAIL-TAIL HEAD-TAIL  TAIL-HEAD  so probability of getting exactly one tail=2/4=1/2

Find the area of rhombus whose diagonals are 6 cm and 9 cm.

Description : Find the area of rhombus whose diagonals are 6 cm and 9 cm.

Last Answer : Area of rhombus = 1/2×d1×d2 = 1/2×6×9 = 27 ans

Find the area of the triangle whose vertices are 4,3 1,4 and 2,3 .

Description : Find the area of the triangle whose vertices are 4,3 1,4 and 2,3 . 

Last Answer : solution:

Evaluate log3 81.

Description : Evaluate log3 81.

Last Answer : Solution:

6 ÷ 2 (1+2) = ?

Description : 6 ÷ 2 (1+2) = ? a) 1 b) 9

Last Answer : Answer is 1

Which of the following statements is false about cyclohexane? (a) It is a saturated cyclic hydrocarbon (b) All C–C–C bond angles are 109°28' (c) It is very unstable, strained compound. (d) It can exist in two conformations which are designated as the boat-form and the chair-form

Description : Which of the following statements is false about cyclohexane? (a) It is a saturated cyclic hydrocarbon (b) All C–C–C bond angles are 109°28' (c) It is very unstable, strained compound. (d) It can exist in two conformations which are designated as the boat-form and the chair-form

Last Answer : It is very unstable, strained compound

Which of following statements is false about propane? (a) all bond angles are 109.5° (b) each carbon is sp3 hybridized (c) the compound is combustible (d) the compound undergoes polymerization to give polypropylene.

Description : Which of following statements is false about propane? (a) all bond angles are 109.5° (b) each carbon is sp3 hybridized (c) the compound is combustible (d) the compound undergoes polymerization to give polypropylene.

Last Answer : the compound undergoes polymerization to give polypropylene.

15. Which of the following is correct?(1) \( \tan 1>\tan 2 \)(2) \( \tan 2>\tan 1 \)(3) \( \sin 1\cos 2 \)

Description : 15. Which of the following is correct?(1) \( \tan 1>\tan 2 \)(2) \( \tan 2>\tan 1 \)(3) \( \sin 1\cos 2 \)

Last Answer : 15. Which of the following is correct? (1) \( \tan 1>\tan 2 \) (2) \( \tan 2>\tan 1 \) (3) \( \sin 1\cos 2 \)

What is the perimeter and height of a triangle that has a base length of 15cm with base angles of 28.67 degrees and 15.5 degrees?

Description : What is the perimeter and height of a triangle that has a base length of 15cm with base angles of 28.67 degrees and 15.5 degrees?

Last Answer : Using the sine formulae of a/A=b/B=c/C and A/a=B/b=C/c intrigonometry the perimeter of the triangle is 31.08 cm with aheight of 2.76 cm both rounded to two decimal places.

The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the Vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto (A) 5" (B) 10" (C) 15" (D) 20"

Description : The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the Vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto (A) 5" (B) 10" (C) 15" (D) 20"

Last Answer : (D) 20"

If A lies in the third quadrant and 3 tan A – 4 = 0, then what is the value of 5 sin 2 A + 3 sin A + 4 cos A? -Maths 9th

Description : If A lies in the third quadrant and 3 tan A – 4 = 0, then what is the value of 5 sin 2 A + 3 sin A + 4 cos A? -Maths 9th

Last Answer : answer:

If tan x = b/a , then what is the value of a cos 2x + b sin 2x? -Maths 9th

Description : If tan x = b/a , then what is the value of a cos 2x + b sin 2x? -Maths 9th

Last Answer : answer:

If cosec A = 2, then the value of 1/(tan A) + (sin A)/(1+cos A) is -Maths 9th

Description : If cosec A = 2, then the value of 1/(tan A) + (sin A)/(1+cos A) is -Maths 9th

Last Answer : answer:

If sin^4x + sin^2x = 1 then what is 1 are the value of cot^4 x + cot^2 x? -Maths 9th

Description : If sin^4x + sin^2x = 1 then what is 1 are the value of cot^4 x + cot^2 x? -Maths 9th

Last Answer : answer:

What is the value of sin A cos A tan A + cos A sin A cot A ? -Maths 9th

Description : What is the value of sin A cos A tan A + cos A sin A cot A ? -Maths 9th

Last Answer : answer:

If sin A=1/2, then find the value ofcos A. -Maths 9th

Description : If sin A=1/2, then find the value ofcos A. -Maths 9th

Last Answer : If sec A= 2, then find the value of 1cotA+cosA1+sinA

What is the value of sin 30º ?

Description : What is the value of sin 30º ?

Last Answer : The value of sin 30 is half of 1 or 0.5 or 1/2

What is the value of sin 45 ?

Description : What is the value of sin 45 ?

Last Answer : sin is the value of 45 (( 1 / √2 )

What is the value of sin 60 ?

Description : What is the value of sin 60 ?

Last Answer : The value of sin 60 হচ্ছে is ( 3/2 )

What is the value of sin 90 ?

Description : What is the value of sin 90 ?

Last Answer : The value of sin 90 is 1

What is the value of sin 0 ?

Description : What is the value of sin 0 ?

Last Answer : The value of sin 0 হচ্ছে is 0

If `alpha, beta` are the roots of the equation `x^2 + (sin phi -1)x-1/2 cos^2 phi = 0 (phi in R),` then the maximum value of the sum of the squares of

Description : If `alpha, beta` are the roots of the equation `x^2 + (sin phi -1)x-1/2 cos^2 phi = 0 (phi in R),` then the maximum value of the sum of the squares of

Last Answer : If `alpha, beta` are the roots of the equation `x^2 + (sin phi -1)x-1/2 cos^2 phi = 0 (phi in R),` then ... the roots is. A. 4 B. 3 C. `9//4` D. 2

Q. The value of is equal `sum_(k=1)^13(1/(sin(pi/4+(k-1)pi/6)sin(pi/4+k pi/6))` is equal

Description : Q. The value of is equal `sum_(k=1)^13(1/(sin(pi/4+(k-1)pi/6)sin(pi/4+k pi/6))` is equal

Last Answer : Q. The value of is equal `sum_(k=1)^13(1/(sin(pi/4+(k-1)pi/6)sin(pi/4+k pi/6))` is equal A. `3-sqrt(3)` ... (3))` C. `2(sqrt(3)-1)` D. `2(2+sqrt(3))`

The positive integer value of `n gt 3` satisfying the equation `(1)/(sin((pi)/(n)))=(1)/(sin((2pi)/(n)))+(1)/(sin((3pi)/(n)))` is

Description : The positive integer value of `n gt 3` satisfying the equation `(1)/(sin((pi)/(n)))=(1)/(sin((2pi)/(n)))+(1)/(sin((3pi)/(n)))` is

Last Answer : The positive integer value of `n gt 3` satisfying the equation `(1)/(sin((pi)/(n)))=(1)/(sin((2pi)/(n)))+(1)/(sin((3pi)/(n)))` is

The maximum value of the expression `(1)/(sin^(2)theta+3sinthetacostheta+5cos^(2)theta)` is

Description : The maximum value of the expression `(1)/(sin^(2)theta+3sinthetacostheta+5cos^(2)theta)` is

Last Answer : The maximum value of the expression `(1)/(sin^(2)theta+3sinthetacostheta+5cos^(2)theta)` is

If cos and theta 0.65 what is the value of sin and theta?

Description : If cos and theta 0.65 what is the value of sin and theta?

Last Answer : You can use the Pythagorean identity to solve this:(sin theta) squared + (cos theta) squared = 1.

If sin theta equals 3/4 and theta is in quadrant II what is the value of tan theta?

Description : If sin theta equals 3/4 and theta is in quadrant II what is the value of tan theta?

Last Answer : 0.75

The value of sin A or cos A never exceeds ————a. One b. Two c. Three d Four

Description : The value of sin A or cos A never exceeds ————a. One b. Two c. Three d Four

Last Answer : a. One

The value of 2 tan 2 45°+ cos 2 30° − sin 2 60° is (a) 0 (b) 1 (c) -2 (d) 2

Description : The value of 2 tan 2 45°+ cos 2 30° − sin 2 60° is (a) 0 (b) 1 (c) -2 (d) 2

Last Answer : (d) 2

Given that sin A=1/2 and cos B=1/√2 then the value of (A + B) is: (a)30 (b)45 (c)75 (d)60

Description : Given that sin A=1/2 and cos B=1/√2 then the value of (A + B) is: (a)30 (b)45 (c)75 (d)60

Last Answer : (c)75

In right triangle ABC, right angled at C, if tan A = 1, then the value of 2 sin A cos A is (a) 0 (b) 1 (c) – 1 (d) 2

Description : In right triangle ABC, right angled at C, if tan A = 1, then the value of 2 sin A cos A is (a) 0 (b) 1 (c) – 1 (d) 2

Last Answer : (b) 1

The value of sin 60° cos 30° + sin 30° cos 60° is: a 0 b 1 c 2 d 4

Description : The value of sin 60° cos 30° + sin 30° cos 60° is: a 0 b 1 c 2 d 4

Last Answer : b 1

Find the Maxwell first law value for the electric field intensity is given by A sin wt az a) 0 b) 1 c) -1 d) A

Description : Find the Maxwell first law value for the electric field intensity is given by A sin wt az a) 0 b) 1 c) -1 d) A

Last Answer : a) 0

Find the divergence theorem value for the function given by (e z , sin x, y 2 ) a) 1 b) 0 c) -1 d) 2

Description : Find the divergence theorem value for the function given by (e z , sin x, y 2 ) a) 1 b) 0 c) -1 d) 2

Last Answer : b) 0

If a function is described by F = (3x + z, y 2 − sin x 2 z, xz + ye x5 ), then the divergence theorem value in the region 0<x<1, 0<y<3 and 0<z<2 will be a) 13 b) 26 c) 39 d) 51

Description : If a function is described by F = (3x + z, y 2 − sin x 2 z, xz + ye x5 ), then the divergence theorem value in the region 0

Last Answer : c) 39

Using the rule for differentiation for quotient of two functions, prove that d/dx (sin x/cos x) = sec^2 x

Description : Using the rule for differentiation for quotient of two functions, prove that d/dx (sin x/cos x) = sec^2 x

Last Answer : Using the rule for differentiation for quotient of two functions, prove that d/dx (sin x/cos x) = sec2x