BASIC Trig Ratios

Front

What is the mnemonic to remember trigonometric ratios?

Back

Soh Cah Toa

Front

What is the cosine of angle P in a right triangle?

Back

Cosine is defined as the ratio of the length of the adjacent side to the hypotenuse, so cos(P) = adjacent/hypotenuse.

Front

In a right triangle, which side is adjacent to angle A?

Back

The side that forms angle A with the hypotenuse.

Front

Which side is adjacent to angle x in a right triangle?

Back

The side that is next to angle x and is not the hypotenuse.

Front

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

Back

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

Front

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

Back

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

Front

If sin(θ) = opposite/hypotenuse, what is the opposite side if hypotenuse = 10 and sin(θ) = 0.5?

Back

The opposite side = sin(θ) * hypotenuse = 0.5 * 10 = 5.

Front

What is the relationship between sine and cosine for complementary angles?

Back

sin(θ) = cos(90° - θ).

Front

How do you find the hypotenuse using the Pythagorean theorem?

Back

Hypotenuse = √(adjacent² + opposite²).

Front

What is the value of cos(0°)?

Back

cos(0°) = 1.