Understanding Trigonometric Ratios and Functions

Front

What is the definition of sine 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 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 definition of tangent 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 the trigonometric ratios?

Back

Soh Cah Toa.

Front

What is the sine ratio for angle Z if sinZ=5/13?

Back

The sine ratio for angle Z is 5/13.

Front

How do you find Cos(A) if given the opposite side and hypotenuse?

Back

Use the formula cos(A) = adjacent/hypotenuse.

Front

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

Back

sin(θ) = cos(90° - θ).

Front

What is the sine of 33 degrees if sin(33)=x/14?

Back

x = 14 * sin(33).

Front

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

Back

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

Front

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

Back

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