3. Unit Circle

In Exercises 44–48, find the reference angle for each angle.- 11𝜋3

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.sin 240°

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.tan 120°

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.sec 7𝜋4

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.cos 11𝜋6

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.cot(-210°)

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.csc(-2𝜋/3)

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.sin(-𝜋/3)

In Exercises 49–59, find the exact value of each expression. Do not use a calculator.cos(-35𝜋 / 6)

Find the reference angle for16𝜋3

In Exercises 8–13, find the exact value of each expression. Do not use a calculator.tan 300°

In Exercises 8–13, find the exact value of each expression. Do not use a calculator.sec 22𝜋3

In Exercises 8–13, find the exact value of each expression. Do not use a calculator.cot (-8𝜋/3)

Concept Check Match each angle in Column I with its reference angle in Column II. Choices may be used once, more than once, or not at all. See Example 1. I. II.5. A. 45°6. 212° B. 60°7. C. 82°8. D. 30°9. E. 38°10. F. 32°

Concept Check Match each angle in Column I with its reference angle in Column II. Choices may be used once, more than once, or not at all. See Example 1. I. II.5. A. 45°6. B. 60°7. -135° C. 82°8. D. 30°9. E. 38°10. F. 32°