Trig Ratios - Finding a Missing Side

Front

What are the three main trigonometric ratios?

Back

Sine (sin), Cosine (cos), Tangent (tan)

Front

Define Sine (sin) in a right triangle.

Back

Sine is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

Define Cosine (cos) in a right triangle.

Back

Cosine is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

Define Tangent (tan) in a right triangle.

Back

Tangent is the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you find the missing side using the tangent ratio?

Back

Use the formula: tan(angle) = opposite/adjacent.

Front

If tan(24°) = x/12, how do you solve for x?

Back

x = 12 * tan(24°).

Front

What is the value of tan(24°) approximately?

Back

Approximately 0.445.

Front

If the opposite side is 5 and the adjacent side is 12, what is the tangent ratio?

Back

tan = 5/12.

Front

What is the formula to find the hypotenuse using sine?

Back

hypotenuse = opposite/sin(angle).

Front

If sin(30°) = 0.5, what is the opposite side if the hypotenuse is 10?

Back

Opposite side = 10 * sin(30°) = 5.