1. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.)

cos(cos¹(4/7))

2. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.) sin(sin¹(3))

3. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.)

cos¹ (cos( /6))

4. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.) cos¹(cos(11/6))

5. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.) tan¹(tan(/4))

6. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.) tan(sin¹(3/2))

7. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.)

sin(tan¹(1))

8. Find the exact value of each expression, if it is defined. (If an answer is undefined, enter UNDEFINED.) (a) cos¹ (2/2)

(b) cos¹(1)

(c) cos¹ (-2/2)

9. Use a calculator (in radian mode) to find an approximate value of the expression correct to five decimal places, if it is defined. (If an answer is undefined, enter UNDEFINED.)

tan¹(12)

10. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.) sin(sin¹(1/2))

11. Find the exact value of the expression, if it is defined. (If an answer is undefined, enter UNDEFINED.)

cos(sin¹(0))