# Math Help - Identity

1. ## Identity

Use the Pythagorean identity sin squared theta + cos squared theta = 1 to show that 1 + cot squared theta = csc squared theta.

2. Hi

This is not a difficult one

$1 + \cot^2 \theta = 1 + \frac{\cos^2 \theta}{\sin^2 \theta}$

Use the same denominator and the identity $\cos^2 \theta + \sin^2 \theta = 1$

3. mind elaborating on that?

4. $1 + \cot^2 \theta = 1 + \frac{\cos^2 \theta}{\sin^2 \theta} = \frac{\sin^2 \theta + \cos^2 \theta}{\sin^2 \theta} = \frac{1}{\sin^2 \theta} = \csc^2 \theta$