Sin, Cos, Tan

Front

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

Back

Sine (sin) of an angle 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) of an angle 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) of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

If sin 40 = w/28, what is the value of w?

Back

w = 28 * sin 40.

Front

Which side is the hypotenuse in a right triangle?

Back

The hypotenuse is the longest side opposite the right angle.

Front

If you know the opposite side and the hypotenuse, which trig function do you use?

Back

Use sine.

Front

If you know the adjacent side and the hypotenuse, which trig function do you use?

Back

Use cosine.

Front

If you know the opposite and adjacent sides, which trig function do you use?

Back

Use tangent.

Front

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

Back

sin(angle) = opposite/hypotenuse.

Front

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

Back

cos(angle) = adjacent/hypotenuse.