6.2 Trigonometric Ratio Introduction Practice

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

Sine (sin) is the ratio of the length of the opposite side to the length of the hypotenuse in a right triangle.

Front

What is the cosine ratio?

Back

Cosine (cos) is the ratio of the length of the adjacent side to the length of the hypotenuse in a right triangle.

Front

What is the tangent ratio?

Back

Tangent (tan) is the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

Front

If the opposite side is 7 and the hypotenuse is 25, what is the sine ratio?

Back

sin = Opp/Hyp = 7/25.

Front

If the adjacent side is 24 and the hypotenuse is 25, what is the cosine ratio?

Back

cos = Adj/Hyp = 24/25.

Front

If the opposite side is 7 and the adjacent side is 24, what is the tangent ratio?

Back

tan = Opp/Adj = 7/24.

Front

In a right triangle, if angle x is 30 degrees, what is the sine of x?

Back

sin(30°) = 1/2.

Front

In a right triangle, if angle x is 45 degrees, what is the cosine of x?

Back

cos(45°) = √2/2.

Front

In a right triangle, if angle x is 60 degrees, what is the tangent of x?

Back

tan(60°) = √3.