Verify That the Equation Is an Identity $$\cot ( x + y ) \cot ( x - y ) = \frac { 1 - \tan ^ { 2 } x \tan ^ { 2 } y } { \tan ^ { 2 } x - \tan ^ { 2 } y }$$

Q386: Solve the equation for exact solutions

Q387: Use a sum or difference identity

Q388: Solve the equation for x, where

Q389: Write the expression in terms of

Q390: Graph the expression on each side

Q392: Factor the trigonometric expression and simplify.<br>-

Q393: Verify that the equation is an

Q394: Use an identity to write the

Q395: Use identities to find the indicated

Q396: Rewrite the following as a product