Intro to the Unit Circle

What angle is drawn?

• 23⁰

• 67⁰

• 383⁰

• 427⁰

Which of the following is a negative coterminal angle of 165 degrees?

• 295

• 525

• -525

• -195

Find a coterminal angle to 5°.

• 365°

• 255°

• -220°

• -365°

Convert 210^o to Radians

• 7π / 6

• 21π / 10

• 5π / 6

• 9π / 4

Find the arc length.

• 3π/4 ft

• 39π/4 ft

• 13π/4 ft

• 4π/13 ft

Convert 510^o to Radians

• 25π / 3

• 23π / 8

• 17π / 6

• 51π / 8

Convert 7π/ 6 radians into degrees

• 225

• 210

• 270

• 240

Find a coterminal angle to 0 degrees.

• 360

• 180

• 90

• 270

Find a coterminal angle to -180 degrees.

• 180

• 90

• 270

• 360

Find the arc length.  Leave your answer in terms of π.

• 7/4π

• 7/2π

• 1/8π

• 45π