Trig and Special Right Triangles

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 are the ratios used in trigonometry for a right triangle?

Back

The primary ratios are sine, cosine, and tangent.

Front

Define sine in the context of a right triangle.

Back

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

Front

Define cosine in the context of a right triangle.

Back

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

Front

Define tangent in the context of a right triangle.

Back

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

Front

What is the special property of a 45-45-90 triangle?

Back

Front

What is the special property of a 30-60-90 triangle?

Back

In a 30-60-90 triangle, the lengths of the sides are in the ratio 1:√3:2.

Front

How do you find the length of the hypotenuse in a 45-45-90 triangle?

Back

Front

How do you find the length of the longer leg in a 30-60-90 triangle?

Back

Front

What is the sine of 30 degrees?

Back