Unit Circle Practice

Front

What is half a circle in radians?

Back

π

Front

What is the value of cos(0°)?

Back

1

Front

If sin A < 0 and cos A < 0, which quadrant is A in?

Back

III

Front

What is the exact value of cos 330°?

Back

√3/2

Front

Identify the positive angle in both radians and degrees that represent point L: 240°.

Back

240°, \frac{4\pi}{3}

Front

Identify the positive angle in both radians and degrees that represent point L: 225°.

Back

225°, \frac{5\pi}{4}

Front

Identify the positive angle in both radians and degrees that represent point L: -60°.

Back

-60°, -\frac{\pi}{3}

Front

Identify the positive angle in both radians and degrees that represent point L: 270°.

Back

270°, \frac{3\pi}{2}

Front

What is the relationship between degrees and radians?

Back

180° = π radians.

Front

What is the sine of 90°?

Back

1