SOH CAH TOA

Front

What does SOH CAH TOA stand for in trigonometry?

Back

SOH: Sine = Opposite/Hypotenuse, CAH: Cosine = Adjacent/Hypotenuse, TOA: Tangent = Opposite/Adjacent.

Front

What type of triangle is used when applying SOH CAH TOA?

Back

Right triangle.

Front

How do you calculate the cosine of an angle in a right triangle?

Back

Cosine of an angle = length of adjacent side / length of hypotenuse.

Front

If cos(θ) = 0.5, what is the length of the adjacent side if the hypotenuse is 10?

Back

Adjacent side = cos(θ) * hypotenuse = 0.5 * 10 = 5.

Front

What is the sine of a 30-degree angle?

Back

sin(30°) = 1/2.

Front

How do you find the length of a side using the sine function?

Back

Length of opposite side = sin(θ) * hypotenuse.

Front

What is the tangent of an angle in a right triangle?

Back

Tangent of an angle = length of opposite side / length of adjacent side.

Front

If the opposite side is 4 cm and the adjacent side is 3 cm, what is the tangent of the angle?

Back

tan(θ) = opposite/adjacent = 4/3.

Front

What is the relationship between the sides of a right triangle and the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse and a, b are the other two sides.

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.