Trigonometry

Front

What is the sine of 330°?

Back

-1/2

Front

What is the sine of 180°?

Back

0

Front

Which angle is coterminal with 750°?

Back

30°

Front

What is the reference angle for a -160° angle?

Back

20°

Front

What is the sine of 225°?

Back

-√2/2

Front

Define sine in terms of a right triangle.

Back

Sine is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is a coterminal angle?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position.

Front

How do you find a coterminal angle?

Back

Add or subtract multiples of 360°.

Front

What is the reference angle?

Back

The reference angle is the acute angle formed by the terminal side of an angle and the x-axis.

Front

What is the sine of 90°?

Back

1