Trig Ratio Basics

Front

What is the ratio for tangent?

Back

opp/adj

Front

What is the ratio for cosine?

Back

adj/hyp

Front

What is the ratio for sine?

Back

opp/hyp

Front

What is the definition of a right triangle?

Back

A triangle with one angle measuring 90 degrees.

Front

What is the Pythagorean theorem?

Back

Front

What is the sine of angle θ?

Back

The ratio of the length of the opposite side to the hypotenuse.

Front

What is the cosine of angle θ?

Back

The ratio of the length of the adjacent side to the hypotenuse.

Front

What is the tangent of angle θ?

Back

The ratio of the length of the opposite side to the adjacent side.

Front

If sin(θ) = 0.5, what is θ?

Back

θ = 30° or 150° (in degrees).

Front

If cos(θ) = 0.6, what is the adjacent side if the hypotenuse is 10?

Back

Adjacent = 6.