8.2 - Trig - Finding Sides

Front

What is the cosine ratio in a right triangle?

Back

The cosine ratio is defined as the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the sine ratio in a right triangle?

Back

The sine ratio is defined as the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the tangent ratio in a right triangle?

Back

The tangent ratio is defined as the ratio of the length of the opposite side to the length of the adjacent side.

Front

If cos(θ) = adjacent/hypotenuse, what is the adjacent side if hypotenuse = 14 and cos(37°) is used?

Back

Adjacent = 14 * cos(37°) = 14 * 0.7986 ≈ 11.18.

Front

How do you find the length of a missing side in a right triangle?

Back

Use trigonometric ratios (sine, cosine, tangent) based on the known angles and sides.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

If one side of a right triangle is 6.57 cm and the angle is 37°, what is the opposite side?

Back

Opposite = 6.57 * tan(37°) = 6.57 * 0.7536 ≈ 4.95 cm.

Front

What is the formula to find the length of the hypotenuse?

Back

Hypotenuse = √(adjacent² + opposite²).

Front

How do you round a number to the nearest tenth?

Back

Look at the hundredths place; if it's 5 or more, round up.

Front

What is the value of sin(30°)?

Back

sin(30°) = 0.5.