Find the exact value of each expression. Write angle measures in degrees., homework help

Find the exact value of each expression. Write angle measures in degrees., homework help

Find the exact value of each expression. Write angle measures in degrees. 1. Cos (-120°) 2. Sec(- 7pi over 4) 3. Sin^-1(-square root of 3 over 2) 4. Arctan -1 5. Suppose Θ is in standard position whose terminal side lies in quadrant II. Find the exact values of the remaining five trigonometric functions for Θ for cos Θ = -square root 3 over 2