Trig Ratios - Sin Cos Tan

Front

What is the definition of sine in a right triangle?

Back

Sine (sin) is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the definition of cosine in a right triangle?

Back

Cosine (cos) is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the definition of tangent in a right triangle?

Back

Tangent (tan) is the ratio of the length of the opposite side to the length of the adjacent side.

Front

Which side is opposite of theta in a right triangle?

Back

The side opposite to the angle theta.

Front

Which side is adjacent to theta in a right triangle?

Back

The side next to the angle theta that is not the hypotenuse.

Front

What is the formula for sine?

Back

sin(theta) = opposite / hypotenuse.

Front

What is the formula for cosine?

Back

cos(theta) = adjacent / hypotenuse.

Front

What is the formula for tangent?

Back

tan(theta) = opposite / adjacent.

Front

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

Back

Sine.

Front

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

Back

Cosine.