Trigonometry Examples

$\cot^{2} (x) = \csc^{2} (x) - 1$

Step 1

Start on the right side.

$\csc^{2} (x) - 1$

Step 2

Apply pythagorean identity.

$\cot^{2} (x)$

Step 3

Because the two sides have been shown to be equivalent, the equation is an identity.

$\cot^{2} (x) = \csc^{2} (x) - 1$ is an identity