Trig Ratios

Front

What is the definition of Trigonometric Ratios?

Back

Trigonometric ratios are the ratios of the lengths of the sides of a right triangle to the angles of the triangle.

Front

What are the three primary trigonometric ratios?

Back

Sine (sin), Cosine (cos), and Tangent (tan).

Front

Define Sine (sin) in terms of a right triangle.

Back

Sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

Define Cosine (cos) in terms of a right triangle.

Back

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

Front

Define Tangent (tan) in terms of a right triangle.

Back

Tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the formula for finding sine?

Back

sin(A) = Opposite / Hypotenuse.

Front

What is the formula for finding cosine?

Back

cos(A) = Adjacent / Hypotenuse.

Front

What is the formula for finding tangent?

Back

tan(A) = Opposite / Adjacent.

Front

If the hypotenuse is 10 and the opposite side is 6, what is sin(A)?

Back

sin(A) = 6/10 = 0.6.

Front

If the hypotenuse is 10 and the adjacent side is 8, what is cos(A)?

Back

cos(A) = 8/10 = 0.8.