Precalculus Chapter 5 Pretest

Convert 145.67° from decimal degrees to degrees-minutes-seconds. Round to the nearest thousandth when necessary.

• 145°40'12"

• 145°67'0"

• 145°40'2"

• 145°39'60"

Convert 45° into radians.

• π/4

• π/3

• π/6

• π/2

• 180°

• 90°

• 360°

• 45°

Find a positive and a negative coterminal angle for the given angle 250°. Choose the correct pair of angles.

• Positive: 610°; Negative: -110°

• Positive: 250°; Negative: -470°

• Positive: 970°; Negative: -110°

• Positive: 610°; Negative: -470°

• sin x

• cos x

• tan x

• 1

• 2/√3

• 2√3/3

• 2√3

• 1/2

Fill out the information in the box and choose the graph that matches the trig function. y = 4sin θ - 2.

• A) Amplitude: 4, Vert. shift: Down 2, Min: -3, Max: -1

• B) Amplitude: 4, Vert. shift: Down 2, Min: -6, Max: 2

• C) Amplitude: 4, Vert. shift: Up 2, Min: -2, Max: 6

• D) Amplitude: 1, Vert. shift: None, Min: -1, Max: 1

Match the function y = 3tan(θ/2 - 90) - 1 with the correct graph.

• A) Amplitude: None, Period: 180°, Phase shift: None, Vert. shift: Down 2.

• B) Amplitude: None, Period: 360°, Phase shift: Right 180°, Vert. shift: Down 1.

• C) Amplitude: None, Period: 360°, Phase shift: Left 180°, Vert. shift: Up 1.

• D) Amplitude: None, Period: 360°, Phase shift: Right 30°, Vert. shift: Down 1.