Trig Ratios

Front

What is the ratio for sine?

Back

O/H (Opposite over Hypotenuse)

Front

What is the ratio for cosine?

Back

A/H (Adjacent over Hypotenuse)

Front

What is the ratio for tangent?

Back

O/A (Opposite over Adjacent)

Front

Define the hypotenuse in a right triangle.

Back

The hypotenuse is the longest side of a right triangle, opposite the right angle.

Front

From angle A, what side is BC?

Back

Adjacent

Front

From angle A, what side is AC?

Back

Opposite

Front

What is the sine of an angle in a right triangle?

Back

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

Front

What is the cosine of an angle in a right triangle?

Back

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

Front

What is the tangent of an angle in a right triangle?

Back

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

Front

If sinA = 0.8, what is the value of cosA?

Back

Using the Pythagorean identity, cosA = sqrt(1 - sin^2A) = sqrt(1 - 0.64) = 0.6.