# Prove a Trigonometric Identity for Tangent and Cotangent

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Prove: (1+ cot^2 Î¸/1+tan^2 Î¸)=cot^2 Î¸.

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#### Solution Preview

tan u = sin u/cos u

cot u = cos u/ sin u

1 + cot^2 u = 1 + cos^2u/ sin^2u =[ sin^2 ...

#### Solution Summary

A trigonometric identity is proven and the details are provided in the solution The solution is detailed and well presented.

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