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Sister Kill
Lv 5
Prove that tan(y)/(tan^2(y) - 1) = 1/(tan(y)-cot(y))?
if you say "do your own homework" i'll just mark you as spam because i'm trying so hard and referencing to my formula sheet and still don't know how.
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- 9 years agoFavorite Answer
Look what happens when you divide both sides of equation by tan(y).
- MechEng2030Lv 79 years ago
tan(y)/(tan^2(y) - 1) = 1/(tan(y) - cot(y))
Simplifying RHS:
1/(tan(y) - cot(y)) = 1/(tan(y) - 1/tan(y)) = 1/(tan^2(y) - 1)/tan(y) = tan(y)/(tan^2(y) - 1)
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