4.4 Checkpoints: Trigonometric Functions at Any Angle

Checkpoint 1: Let P = (1, -3) be a point on the terminal side of θ. Find csc(θ). Hint: Draw the angle in standard position.

Mathematical Equivalence

ON

Mathematical Equivalence

OFF

Checkpoint 3: If sinθ < 0 and cosθ < 0, name the quadrant in which angle θ lies.

• Quadrant I

• Quadrant II

• Quadrant III

• Quadrant IV

Mathematical Equivalence

ON

Checkpoint 5c: Find the reference angle, θ′, for θ = -240°.

(There is no degree symbol so just write the numerical value)

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Mathematical Equivalence

ON