Chapter 7.6 Sine

Front

What is the sine of an angle in a right triangle?

Back

The sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

How do you calculate sin C if you know the lengths of the sides?

Back

sin C = opposite side / hypotenuse.

Front

What is the value of sin 30°?

Back

sin 30° = 0.5.

Front

What is the sine function used for in trigonometry?

Back

The sine function is used to relate the angles of a triangle to the lengths of its sides.

Front

If sin A = 0.5, what is the measure of angle A?

Back

Angle A = 30° or 150°.

Front

What is the range of the sine function?

Back

The range of the sine function is from -1 to 1.

Front

What is the sine of 90°?

Back

sin 90° = 1.

Front

How do you find the sine of an angle using a calculator?

Back

Use the sine function key (sin) and input the angle in degrees or radians.

Front

What is the relationship between sine and the unit circle?

Back

In the unit circle, the sine of an angle is the y-coordinate of the point on the circle corresponding to that angle.

Front

What is the sine of 0°?

Back

sin 0° = 0.