Unit Circle Practice

Front

What are the coordinates of the angle \( \frac{3\pi}{4} \) on the unit circle?

Back

(−\sqrt{2}/2, \sqrt{2}/2)

Front

What is the positive angle in degrees and radians that represents point H?

Back

150°, \frac{5\pi}{6}

Front

What is the definition of tangent in terms of sine and cosine?

Back

\( \tan x = \frac{\sin x}{\cos x} \)

Front

What is the sine of \( \frac{2\pi}{3} \)?

Back

\( \frac{\sqrt{3}}{2} \)

Front

What is the value of sine at 210°?

Back

-\frac{1}{2}

Front

What are the coordinates of the angle \( \frac{5\pi}{6} \) on the unit circle?

Back

(−\frac{\sqrt{3}}{2}, \frac{1}{2})

Front

What is the cosine of 0 radians?

Back

1

Front

What is the sine of 90°?

Back

1

Front

What is the relationship between degrees and radians?

Back

\( 180° = \pi \text{ radians} \)

Front

What is the value of \( \sin(30°) \)?

Back

\( \frac{1}{2} \)