5-3 Trigonometric Ratios (Flashcardizz)

Front

What is the definition of cosine in a right triangle?

Back

Cosine (cos) is 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

Sine (sin) is 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

Tangent (tan) is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What mnemonic helps remember trigonometric ratios?

Back

Soh Cah Toa.

Front

If sin(θ) = opposite/hypotenuse, what is the formula for finding the opposite side?

Back

Opposite = sin(θ) * hypotenuse.

Front

If cos(θ) = adjacent/hypotenuse, what is the formula for finding the adjacent side?

Back

Adjacent = cos(θ) * hypotenuse.

Front

If tan(θ) = opposite/adjacent, what is the formula for finding the opposite side?

Back

Opposite = tan(θ) * adjacent.

Front

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

Back

sin(θ) = cos(90° - θ).

Front

What is the value of cos(37°) if the hypotenuse is 14?

Back

cos(37°) = adjacent/14.

Front

What is the value of sin(37°) if the hypotenuse is 14?

Back

sin(37°) = opposite/14.