1 In the circle below, fill in the blanks to label the number of degrees and radians at each point.

A circle with 8 evenly-spaced blanks around it. Each blank has space to fill in the degrees and radians that represent that portion of the circle.

2 Use Pyret’s sin and cos functions to complete the table below.
Note: These function use radians not degrees.

Angle (θ) sin(θ) cos(θ)

0° / 0 π

45° / 0.25π

sin(0.25 * PI) =

90° / 0.50π

135° / 0.75π

180° / 1.00π

225° / 1.25π

270° / 1.50π

315° / 1.75π

3 Which function computes the horizontal leg of the right triangle (A)?

4 Which function computes the vertical leg of the right triangle (B)?

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