Right Triangle Trigonometry

Front

What is a right triangle?

Back

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

Front

What are the three sides of a right triangle called?

Back

The three sides are called the hypotenuse (the longest side), the opposite side (the side opposite the angle), and the adjacent side (the side next to the angle).

Front

What is the Pythagorean theorem?

Back

Front

What does SOH CAH TOA stand for?

Back

SOH CAH TOA is a mnemonic to remember the definitions of the sine, cosine, and tangent functions: Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent.

Front

How do you calculate the sine of an angle in a right triangle?

Back

Front

How do you calculate the cosine of an angle in a right triangle?

Back

Front

How do you calculate the tangent of an angle in a right triangle?

Back

Front

If angle A is 30 degrees, what is the sine of angle A?

Back

Front

If angle A is 60 degrees, what is the cosine of angle A?

Back

Front

If angle A is 45 degrees, what is the tangent of angle A?

Back