Last minute explanations on Trig Identities.

Last minute explanations on Trig Identities.
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Answer :

I don’t know how to do 1–3 and 5 or maybe I forgot, but I can help with 4. THE ZERO WITH THE BELT ACROSS=X 4. (1-cotX)^2 = csc^2 X -2cotX (1-cotX)(1-cotX) = csc^2 X -2cotX 1-cot -cot +cot^2 X = csc^2 X -2cotX You rearrange the first part of the equation. (1+ cot^2 X) -cot -cot = (csc^2 X) -2cotX Csc^2 X -2 cotX = csc^2 X -2cotX Also, did you take notes? Can you use your notes or cheat-sheets on your final? You can always wake up early tomorrow to ask your teacher for help or stay after school…
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