Chapter 9 Some Applications of Trigonometry

Chapter 9 Some Applications of Trigonometry
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Chapter 9 Some Applications of Trigonometry

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Chapter 9 Some Applications of Trigonometry

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Related questions

Chapter 8 Introduction to Trigonometry

Description : Chapter 8 Introduction to Trigonometry

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Where can I find example trigonometry questions?

Description : Where can I find example trigonometry questions?

Last Answer : maybe more worded problems.

Could someone explain this trigonometry question for me?

Description : Could someone explain this trigonometry question for me?

Last Answer : answer:So I’ll explain what I get. lets replace h:o and d:a tan= o/a but of course we don’t have the full length of a so by rearranging it to o=tanθ a isn’t the right answer so far. I don’t get why tanθ2 / tan θ2 -tanθ1 is there.

Ratios of sides of a right triangle with respect to its acute angles are knownas ————– a. Trigonometric Identities b. Trigonometric Ratios c. Trigonometry d. trigonometry formula

Description : Ratios of sides of a right triangle with respect to its acute angles are knownas ————– a. Trigonometric Identities b. Trigonometric Ratios c. Trigonometry d. trigonometry formula

Last Answer : b. Trigonometric Ratios

When was trigonometry invented?

Description : When was trigonometry invented?

Last Answer : Hipparchus of 2nd century Greece first developed the field.

In the following figure ABCD is a cyclic quadrilateral, the sum of degree measures of ∠A and ∠D is: (SOURCE: Fig. 3.7, Exercise 3.7, Chapter 3, PAIR of LINEAR EQUATIONS in TWO VARIABLES, NCERT, Class X) (a) 120° (b) 180° (c) 230°(d) 250°

Description : In the following figure ABCD is a cyclic quadrilateral, the sum of degree measures of ∠A and ∠D is: (SOURCE: Fig. 3.7, Exercise 3.7, Chapter 3, PAIR of LINEAR EQUATIONS in TWO VARIABLES, NCERT, Class X) (a) 120° (b) 180° (c) 230°(d) 250°

Last Answer : (c) 230°

Chapter 15 Probability

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Chapter 14 Statistics

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Chapter 13 Surface Areas and Volumes

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Chapter 11 Constructions

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Chapter 10 Circles

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Chapter 7 Coordinate Geometry

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Chapter 4 Quadratic Equations

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To the nearest 10%, what percentage of all numbers contain a 9?

Description : To the nearest 10%, what percentage of all numbers contain a 9?

Last Answer : You probably need to clarify that you mean what percentage of the set of all integers contains the digit 9'? Because there are an infinite number of numbers that don't contain that digit (and ... is also an infinite set of digits that does not. Maybe you need to restrict your range some more.

48÷2(9+3) = ?

Description : 48÷2(9+3) = ?

Last Answer : 2

ΔABC ~ ΔPQR. Area of ΔABC = 81 cm2 and area of ΔPQR =121 cm2. If altitudeAD = 9 cm, then PM is equal to (a) 9 cm (b) 11 cm (c) 10cm (d) None of these

Description : ΔABC ~ ΔPQR. Area of ΔABC = 81 cm2 and area of ΔPQR =121 cm2. If altitudeAD = 9 cm, then PM is equal to (a) 9 cm (b) 11 cm (c) 10cm (d) None of these

Last Answer : (b) 11 cm

A flag pole 18 m high casts a shadow 9.6 m long. Then the distance of the top of the pole from the far end of the shadow is (a) 25.6 (b) 20.4 (c) 23.7 (d) 32.5

Description : A flag pole 18 m high casts a shadow 9.6 m long. Then the distance of the top of the pole from the far end of the shadow is (a) 25.6 (b) 20.4 (c) 23.7 (d) 32.5

Last Answer : (b) 20.4

In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is (a) 8 cm (b) 9 cm (c) 10 cm (d) 12 cm

Description : In a rhombus if d1 = 16 cm, d2 = 12 cm, then the length of the side of the rhombus is (a) 8 cm (b) 9 cm (c) 10 cm (d) 12 cm

Last Answer : (c) 10 cm

Rahul got next chance. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is equal to 7? a. 5/9 b. 5/36 c. 1/6 d. 0

Description : Rahul got next chance. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is equal to 7? a. 5/9 b. 5/36 c. 1/6 d. 0

Last Answer : c. 1/6

Nine playing cards are numbered 2 to 10. A card is selected at random. What is the probability that the card will be an odd number? a. 1/9 b. 2/9 c. 4/9 d. 3/7

Description : Nine playing cards are numbered 2 to 10. A card is selected at random. What is the probability that the card will be an odd number? a. 1/9 b. 2/9 c. 4/9 d. 3/7

Last Answer : c. 4/9

One equation of a pair of dependent linear equation is -2x + 3y = 9 , the second equation can be e) 4x + 6y = 18 f) 4x - 6y = - 18 g) -4x – 6y = 18 h) None of these

Description : One equation of a pair of dependent linear equation is -2x + 3y = 9 , the second equation can be e) 4x + 6y = 18 f) 4x - 6y = - 18 g) -4x – 6y = 18 h) None of these

Last Answer : f) 4x - 6y = - 18

The area of the circle that can be inscribed in a square of side 6 cm is (a) 36 π cm 2 (b) 18 π cm 2 (c) 12 π cm 2 (d) 9 π cm 2

Description : The area of the circle that can be inscribed in a square of side 6 cm is (a) 36 π cm 2 (b) 18 π cm 2 (c) 12 π cm 2 (d) 9 π cm 2

Last Answer : (d) 9 π cm 2

One equation of a pair of dependent linear equation is -2x + 3y = 9 , the second equation can be a) 4x + 6y = 18 b) 4x - 6y = - 18 c) -4x – 6y = 18 d) None of these

Description : One equation of a pair of dependent linear equation is -2x + 3y = 9 , the second equation can be a) 4x + 6y = 18 b) 4x - 6y = - 18 c) -4x – 6y = 18 d) None of these

Last Answer : b) 4x - 6y = - 18

The coordinates of point A , where AB is the diameter of a circle whose centre is (1,3) and B is (5,4),are: (a) (-3,2) (b) (4,-9) (c) (2,-3) (d) (1/2,-2)

Description : The coordinates of point A , where AB is the diameter of a circle whose centre is (1,3) and B is (5,4),are: (a) (-3,2) (b) (4,-9) (c) (2,-3) (d) (1/2,-2)

Last Answer : (a) (-3,2)

The points A (9, 0), B (9, 6), C (–9, 6) and D (–9, 0) are the vertices of a: A(-3,-5) and(a)Square (b) Rhombus (c) Rectangle (d) Trapezium

Description : The points A (9, 0), B (9, 6), C (–9, 6) and D (–9, 0) are the vertices of a: A(-3,-5) and(a)Square (b) Rhombus (c) Rectangle (d) Trapezium

Last Answer : (c) Rectangle

The area to be covered by Green Grass is: a) 4 square km b) 5 square km c) 9 square km d) 10 square km

Description : The area to be covered by Green Grass is: a) 4 square km b) 5 square km c) 9 square km d) 10 square km

Last Answer : a) 4 square km

The area of the triangular region, in the following figure, bounded by the lines 2x-y=1 and x+2y=13 and Y-axis is (a) 11.25 sq.units (b) 9.75 sq.units (c) 16.25 sq,units (d) 18.75 sq.units

Description : The area of the triangular region, in the following figure, bounded by the lines 2x-y=1 and x+2y=13 and Y-axis is (a) 11.25 sq.units (b) 9.75 sq.units (c) 16.25 sq,units (d) 18.75 sq.units

Last Answer : (a) 11.25 sq.units

If tan A = 4/3 and sin A = 4/5 then cos A = —————– a. 4/5 b. 3/5 c. 3⁄4 d.9/11

Description : If tan A = 4/3 and sin A = 4/5 then cos A = —————– a. 4/5 b. 3/5 c. 3⁄4 d.9/11

Last Answer : b. 3/5

In the given figure, if AB = 14 cm, BD = 10 cm and DC = 8 cm, then the value of tan B is a) 4/3 b) 14/3 c) 11/3 d) 9/12

Description : In the given figure, if AB = 14 cm, BD = 10 cm and DC = 8 cm, then the value of tan B is a) 4/3 b) 14/3 c) 11/3 d) 9/12

Last Answer : a) 4/3

Solve for x and y: 1/x - 1/y = 1/3, 1/x2 + 1/y2 = 5/9.

Description : Solve for x and y: 1/x - 1/y = 1/3, 1/x2 + 1/y2 = 5/9.

Last Answer : Answer: x = 3/2 or -3 and y = 3 or -3/2.

A certain type of mixture is prepared by mixing brand A at Rs. 9/kg with brand B at Rs. 4/kg. If the mixture is worth Rs. 7/kg, how many kgs. of brand A are needed to make 40 kgs. of the mixture?

Description : A certain type of mixture is prepared by mixing brand A at Rs. 9/kg with brand B at Rs. 4/kg. If the mixture is worth Rs. 7/kg, how many kgs. of brand A are needed to make 40 kgs. of the mixture?

Last Answer : Answer: Brand A needed is 24 kgs.

Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men work to complete the job? (a) 8 hrs (b) 7 1/2 hrs (c) 7 hrs (d) 9 hrs

Description : Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men work to complete the job? (a) 8 hrs (b) 7 1/2 hrs (c) 7 hrs (d) 9 hrs

Last Answer : (b) 7 1/2 hrs

Calculate (1/10)18 - (1/10)20 = ? (a) 99/1020 (b) 99/10 (c) 0.9 (d) none of these

Description : Calculate (1/10)18 - (1/10)20 = ? (a) 99/1020 (b) 99/10 (c) 0.9 (d) none of these

Last Answer : (a) 99/1020

Where can I learn trigonometry and logarithms without having a panic attack?

Description : Where can I learn trigonometry and logarithms without having a panic attack?

Last Answer : Cheatsheet

Can you figure out this trigonometry problem?

Description : Can you figure out this trigonometry problem?

Last Answer : answer:Have you written it properly? If you do: 8 x sin(10°) * sin(30°) * sin(50°) * sin(70°) as a straight multiplication problem, then the answer is .5 (actually, .4999999999999…) See here

If triangle geometry is called trigonometry, what is circle geometry called?

Description : If triangle geometry is called trigonometry, what is circle geometry called?

Last Answer : My best guess would be polar, but that more refers to how to graph something with respect to circular coordinates than the actual geometric properties of a circle. Hmm, this is a tough one!

A real life job that uses trigonometry function?

Description : A real life job that uses trigonometry function?

Last Answer : Programming. I use trig quite often for graphical and spacial purposes.

What is the formula of trigonometry?

Description : What is the formula of trigonometry?

Last Answer : The answer depends on what other information is available toyou.

What is trigonometry ?

Description : What is trigonometry ?

Last Answer : Trigonometry is an important branch of mathematics. The English word trigonometry is a combination of the Greek word trigon meaning three angles and metron meaning measure. The advent of trigonometry to easily solve ever-new complex problems arising in the field of measurement.

Who is the father of trigonometry ?

Last Answer : Hippar Chas, the father of trigonometry.

Trigonometry Discovery Does Who ?

Last Answer : Greek Mathematician To hippocampus Trigonometric Of ideas Promoter As Consideration To do Is

Who can introduce me some popular forums about maths？?

Description : Who can introduce me some popular forums about maths？?

Last Answer : answer:Well, there are a few good math questions right here on ask-public. There are also plenty of mathematicians. Here's an interesting math discussion I started not too long ago: http: ... com/158130/if-1901111111-2902222222-3903333333-and-so-on-then-how-come-9909999999/. Option 2: Stackexchange.

What are some theorems that are intuitively true but very difficult to prove?

Description : What are some theorems that are intuitively true but very difficult to prove?

Last Answer : Fermat’s conjecture?