Prove: (1+ cot^2 θ/1+tan^2 θ)=cot^2 θ
tan u = sin u/cos u
cot u = cos u/ sin u
1 + cot^2 u = 1 + cos^2u/ sin^2u =[ sin^2 u ...
A trigonometric identity is proven The solution is detailed and well presented. The response received a rating of "5" from the student who originally posted the question.