SOLUTION: Prove: 1-cot^2x/1+cot^2x=2cos^2-1

Algebra ->  Trigonometry-basics -> SOLUTION: Prove: 1-cot^2x/1+cot^2x=2cos^2-1       Log On


   

Question 890004: Prove:
1-cot^2x/1+cot^2x=2cos^2-1
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

.
.

.
.

.
.
%281-cot%5E2%28x%29%29%2F%281%2Bcot%5E2%28x%29%29=%281-cos%5E2%28x%29%29-cos%5E2%28x%29
.
.
%281-cot%5E2%28x%29%29%2F%281%2Bcot%5E2%28x%29%29=1-2cos%5E2%28x%29
.
.
Not the same solution as you're looking for.