Pre-Calculus: Topics in Trigonometry

In the unit circle, which angle in degrees corresponds to an angular measure of π/4 radians?

• 30°

• 45°

• 60°

• 90°

Convert 270 degrees to radians.

• 3π/2

• 2π

• π

• π/2

Which of the following is a coterminal angle of 150 degrees?

• -210 degrees

• 30 degrees

• -30 degrees

• 390 degrees

What is the radian measure of an angle that is coterminal with -π/2?

• π/2

• -3π/2

• -π

• 3π/2

Given the circular function y = cos(θ), find y when θ = π/3.

• ½

• √3/2

• 0

• -1/2

Use reference angles to find the exact value of sin(7π/6).

• -1/2

• -√3/2

• 1/2

• √3/2

Determine the domain of the secant function.

• All real numbers

• All real numbers except odd multiples of π/2

• All real numbers except multiples of π

• All real numbers except multiples of π/3

Which circular function has the range (-∞, -1] U [1, ∞)?

• Tangent

• Cosecant

• Cosine

• Sine

Solve for θ if tan(θ) = 1 and 0 < θ < 2π.

• π/4, 5π/4

• 3π/4, 7π/4

• π/6, 7π/6

• 2π/3, 4π/3

What is the amplitude of the graph of the function y = -2cos(x)?

• 1

• 2

• -2

• 3