Trigonometric Ratios and Functions

Front

What is the definition of a 30-60-90 triangle?

Back

A 30-60-90 triangle is a special right triangle where the angles are 30 degrees, 60 degrees, and 90 degrees. The sides are in the ratio 1 : √3 : 2.

Front

What is the long leg in a 30-60-90 triangle?

Back

Front

Which trigonometric function is used to find the opposite side in a right triangle?

Back

Sine function (sin). It is defined as the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the formula for the sine of an angle?

Back

Front

What is the formula for the cosine of an angle?

Back

Front

What is the formula for the tangent of an angle?

Back

Front

Back

Front

What is the ratio for cosine in a right triangle?

Back

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

Front

In a right triangle, if the hypotenuse is 34 and the adjacent side is 30, what is cosC?

Back

Front

What is the relationship between the sides of a right triangle and the Pythagorean theorem?

Back