Trigonometric Ratios Review-P5

Front

What is the definition of sine (sin) in a right triangle?

Back

Sine (sin) is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the definition of cosine (cos) in a right triangle?

Back

Cosine (cos) is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the definition of tangent (tan) in a right triangle?

Back

Tangent (tan) is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the formula for finding the sine of an angle?

Back

sin(X) = Opposite / Hypotenuse.

Front

What is the formula for finding the cosine of an angle?

Back

cos(X) = Adjacent / Hypotenuse.

Front

What is the formula for finding the tangent of an angle?

Back

tan(X) = Opposite / Adjacent.

Front

If sin(30°) = 0.5, what is the ratio of the opposite side to the hypotenuse?

Back

The ratio is 1:2.

Front

If cos(60°) = 0.5, what is the ratio of the adjacent side to the hypotenuse?

Back

The ratio is 1:2.

Front

What is the relationship between sine and cosine for complementary angles?

Back

sin(θ) = cos(90° - θ).

Front

What is the value of sin(90°)?

Back

The value is 1.