Unit Circle & Inverse Trig Functions
Unit Circle & Inverse Trig Functions

Unit Circle & Inverse Trig Functions

Lead Author(s): Kelly Cline

Student Price: FREE

These questions make use of the unit circle to judge properties of angles and to evaluate inverse trigonometric functions at special angles.

[Inverse trigonometric functions] 1

What is arcsin (12) \left( \frac{1}{2} \right) ?

A

0

B

π6\frac{\pi}{6}

C

π4\frac{\pi}{4}

D

π3\frac{\pi}{3}

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[Unit circle] 1
question description

Which of the following is the approximate value for the sine and cosine of angles AA and BB in the figure below.

A

sin AA \approx 0.5, cos AA \approx 0.85, sin BB \approx –0.7, cos BB \approx 0.7

B

sin AA \approx 0.85, cos AA \approx 0.5, sin BB \approx –0.7, cos BB \approx 0.7

C

sin AA \approx 0.5, cos AA \approx 0.85, sin BB \approx 0.7, cos BB \approx 0.7

D

sin AA \approx 0.85, cos AA \approx 0.5, sin BB \approx 0.7, cos BB \approx 0.7

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