Solving Missing Sides of Triangle Using Trig Functions

Front

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

Back

The sine function (sin) is defined as 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 defined as 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 defined as the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you set up a sine equation to find a missing side in a triangle?

Back

To find a missing side using sine, use the equation: sin(angle) = opposite/hypotenuse.

Front

How do you set up a cosine equation to find a missing side in a triangle?

Back

To find a missing side using cosine, use the equation: cos(angle) = adjacent/hypotenuse.

Front

How do you set up a tangent equation to find a missing side in a triangle?

Back

To find a missing side using tangent, use the equation: tan(angle) = opposite/adjacent.

Front

What is the formula to find the hypotenuse using sine?

Back

Hypotenuse = opposite/sin(angle).

Front

What is the formula to find the opposite side using sine?

Back

Opposite = hypotenuse * sin(angle).

Front

What is the formula to find the adjacent side using cosine?

Back

Adjacent = hypotenuse * cos(angle).

Front

What is the formula to find the opposite side using tangent?

Back

Opposite = adjacent * tan(angle).