Verify That Each Equation Is an Identity $$\sec ^ { 4 } x - \tan 4 x = \sec ^ { 2 } x + \tan 2 x$$

Q37: Solve the problem.<br>-A wooden block sitting

Q38: Use the fundamental identities to simplify

Q39: Solve the equation for x, where

Q40: Find the exact value of the

Q41: Verify that each equation is an

Q43: Find the exact value of the

Q44: Use a sum or difference identity

Q45: Verify that each equation is an

Q46: Graph the expression on each side

Q47: Give the exact value of the