SOLUTION: I need help proving this trigonometric function. cos^2x + (tan^2x)(cos^2x)=1

Algebra ->  Trigonometry-basics -> SOLUTION: I need help proving this trigonometric function. cos^2x + (tan^2x)(cos^2x)=1       Log On


   

Question 753354: I need help proving this trigonometric function.
cos^2x + (tan^2x)(cos^2x)=1



Found 2 solutions by stanbon, solver91311:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I need help solving this trigonometric function.
cos^2x + (tan^2x)(cos^2x)=1
-----
cos^2 + [sin^2/cos^2)(cos^2) = 1
---
cos^2 + sin^2 = 1
------
True
-------
Cheers,
Stan H.
================

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Do you mean that you need help proving the trigonometric identity?

John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism