Trig Ratios

Front

What is the definition of the sine ratio (SIN X)?

Back

The sine ratio (SIN X) is defined as the ratio of the length of the opposite side to the length of the hypotenuse in a right triangle.

Front

What is the definition of the cosine ratio (COS X)?

Back

The cosine ratio (COS X) is defined as the ratio of the length of the adjacent side to the length of the hypotenuse in a right triangle.

Front

What is the definition of the tangent ratio (TAN X)?

Back

The tangent ratio (TAN X) is defined as the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

Front

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

Back

To calculate the sine of an angle, divide the length of the opposite side by the length of the hypotenuse.

Front

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

Back

To calculate the cosine of an angle, divide the length of the adjacent side by the length of the hypotenuse.

Front

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

Back

To calculate the tangent of an angle, divide the length of the opposite side by the length of the adjacent side.

Front

What is the relationship between sine, cosine, and tangent?

Back

The relationship is given by the formula: TAN X = SIN X / COS X.

Front

What is the Pythagorean identity involving sine and cosine?

Back

The Pythagorean identity states that SIN² X + COS² X = 1.

Front

What is the sine of 30 degrees?

Back

The sine of 30 degrees is 0.5.

Front

What is the cosine of 60 degrees?

Back

The cosine of 60 degrees is 0.5.