Right Triangles and Trigonometry

Front

What is the definition of a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.

Front

What is the hypotenuse in a right triangle?

Back

The hypotenuse is the longest side of a right triangle, opposite the right angle.

Front

What is the definition of sine in relation to a right triangle?

Back

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

Front

What is the definition of cosine in relation to a right triangle?

Back

Cosine is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the definition of tangent in relation to a right triangle?

Back

Tangent is the ratio of the length of the side opposite the angle to the length of the adjacent side.

Front

If you know the lengths of the opposite and adjacent sides, which trigonometric function do you use?

Back

You use the tangent function.

Front

What is the formula for finding sine?

Back

Sine = Opposite / Hypotenuse.

Front

What is the formula for finding cosine?

Back

Cosine = Adjacent / Hypotenuse.

Front

What is the formula for finding tangent?

Back

Tangent = Opposite / Adjacent.

Front

If you are given the hypotenuse and the opposite side, which trigonometric function do you use?

Back

You use the sine function.