Intro to Right Triangle Trig

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 sides of a right triangle called?

Back

The sides of a right triangle are called the opposite side, adjacent side, and hypotenuse.

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 formula for the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse and a and b are the other two sides.

Front

What is the sine function in relation to 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 function in relation to 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 function in relation to 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 find the sine of an angle?

Back

To find the sine of an angle, divide the length of the opposite side by the length of the hypotenuse.

Front

How do you find the cosine of an angle?

Back

To find the cosine of an angle, divide the length of the adjacent side by the length of the hypotenuse.

Front

How do you find the tangent of an angle?

Back

To find the tangent of an angle, divide the length of the opposite side by the length of the adjacent side.