# Quick question about tangent and cotangent.

• Oct 16th 2010, 04:42 PM
JennyFlowers
Quick question about tangent and cotangent.
Is the following true?

$tan^2 x = \frac{sin^2 x}{cos^2 x}$

$cot^2 x = \frac{cos^2 x}{sin^2 x}$

If so, then I've solved an identity. If not, back to the drawing board! (Crying)
• Oct 16th 2010, 04:49 PM
Ackbeet
Yes. Both are true.