Basic Trig Ratios

Front

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

Back

Front

What is the mnemonic to remember the definitions of the trig ratios?

Back

The mnemonic is SOH CAH TOA.

Front

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

Back

Front

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

Back

Front

In a right triangle, if one angle is 30 degrees, what are the side length ratios?

Back

Front

What is the hypotenuse in a right triangle?

Back

The hypotenuse is the longest side opposite the right angle.

Front

How do you find the length of a side using the sine ratio?

Back

To find a side, use the formula: side = hypotenuse * sin(angle).

Front

How do you find the length of a side using the cosine ratio?

Back

To find a side, use the formula: side = hypotenuse * cos(angle).

Front

How do you find the length of a side using the tangent ratio?

Back

To find a side, use the formula: side = adjacent * tan(angle).

Front

What is the relationship between the angles and sides in a right triangle?

Back

The ratios of the sides are constant for given angles.