Trig Ratios

Front

What are the three primary trigonometric ratios?

Back

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

Front

Define Sine (sin) in a right triangle.

Back

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

Front

Define Cosine (cos) in a right triangle.

Back

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

Front

Define Tangent (tan) in a right triangle.

Back

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

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

How do you find the sine of an angle?

Back

sin(θ) = opposite/hypotenuse.

Front

How do you find the cosine of an angle?

Back

cos(θ) = adjacent/hypotenuse.

Front

How do you find the tangent of an angle?

Back

tan(θ) = opposite/adjacent.

Front

What is the value of sin(90°)?

Back

1

Front

What is the value of cos(0°)?

Back

1