Right angle trig finding an angle

Front

What is the definition of a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is the relationship between the angles in a right triangle?

Back

In a right triangle, one angle is a right angle (90 degrees), and the sum of the other two angles is 90 degrees.

Front

How do you find the measure of an angle using trigonometric ratios?

Back

You can use the sine, cosine, or tangent ratios to find the measure of an angle in a right triangle based on the lengths of the sides.

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

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

Back

The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

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

Back

The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you use the inverse sine function to find an angle?

Back

To find an angle using the inverse sine function, you take the sine ratio and apply the arcsin function to it.

Front

How do you use the inverse cosine function to find an angle?

Back

To find an angle using the inverse cosine function, you take the cosine ratio and apply the arccos function to it.

Front

How do you use the inverse tangent function to find an angle?

Back

To find an angle using the inverse tangent function, you take the tangent ratio and apply the arctan function to it.

Front

What is the formula for finding an angle when given two sides of a right triangle?

Back

You can use the formula: angle = arctan(opposite/adjacent) or angle = arcsin(opposite/hypotenuse) or angle = arccos(adjacent/hypotenuse).