3. Unit Circle

In Exercises 35–60, find the reference angle for each angle.

-150°

In Exercises 35–60, find the reference angle for each angle. 5.5

In Exercises 35–60, find the reference angle for each angle. 553°

In Exercises 35–60, find the reference angle for each angle. 17𝜋 / 6

In Exercises 35–60, find the reference angle for each angle. - 11𝜋 / 4

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. cos 225°

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. sec 240°

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. sin(2𝜋/3)

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. csc(7𝜋/6)

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. cot(7𝜋/4)

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. tan(9𝜋/2)

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. sin(-240°)

In Exercises 61–86, use reference angles to find the exact value of each expression. Do not use a calculator. tan(-𝜋/4)

Use reference angles to find the exact value of each expression. Do not use a calculator. sec 495°

Use reference angles to find the exact value of each expression. Do not use a calculator. cot 19𝜋/6