a. Sketch on separate sets of axes the graphs of y = cos (0 b. Verify

a. Sketch on separate sets of axes the graphs of y = cos θ (0

b. Verify that:

i. cos α = −cos (180° − α) = −cos (180° + α) = cos (360° − α)

ii. tan α = −tan (180° − α) = tan (180° + α) = −tan (360° − α)

Data from Question 16

The graph below shows y = sin θ, 0 ≤ θ ≤ 360°, with one value of θ (θ = α) marked on the axis.

Copy the graph and mark on the θ-axis the positions of 180° − α, 180° + α, and 360° − α.

Verify that: sin α = sin (180° − α) = −sin (180° + α) = −sin (360° − α).

Transcribed Image Text:

VA 1 -1- a 90° 180 270° 360°