Flashcard #4: Trigonometric Ratios

Front

What is the definition of a trigonometric ratio?

Back

A trigonometric ratio is a ratio of the lengths of two sides of a right triangle. The primary trigonometric ratios are sine, cosine, and tangent.

Front

What is the sine ratio?

Back

Front

What is the cosine ratio?

Back

Front

What is the tangent ratio?

Back

Front

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

Back

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

Front

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

Back

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

Front

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

Back

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

Front

What is the relationship between sine, cosine, and tangent?

Back

Front

If sin A = 0.5, what is the angle A?

Back

Front

If cos A = 0.6, what is the angle A?

Back