Trig ratios

Front

What is the sine function in relation to a right triangle?

Back

The sine function (sin) is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine function in relation to a right triangle?

Back

The cosine function (cos) is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent function in relation to a right triangle?

Back

The tangent function (tan) is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the relationship between sine, cosine, and tangent?

Back

tan(A) = sin(A) / cos(A) for any angle A in a right triangle.

Front

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

Back

Use the sine function.

Front

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

Back

Use the cosine function.

Front

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

Back

Use the tangent function.

Front

What is the formula for finding sin(A)?

Back

sin(A) = opposite / hypotenuse.

Front

What is the formula for finding cos(A)?

Back

cos(A) = adjacent / hypotenuse.

Front

What is the formula for finding tan(A)?

Back

tan(A) = opposite / adjacent.