TRIG

Front

What is the definition of a sine function in a right triangle?

Back

In a right triangle, the sine function of an angle is defined as the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine function in relation to a right triangle?

Back

In a right triangle, the cosine function of an angle is defined as the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

Define the tangent function in a right triangle.

Back

In a right triangle, the tangent function of an angle is defined as the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides (a² + b² = c²).

Front

What is the unit circle?

Back

The unit circle is a circle with a radius of one centered at the origin of a coordinate plane, used to define trigonometric functions for all angles.

Front

How do you convert degrees to radians?

Back

To convert degrees to radians, multiply the degree measure by π/180.

Front

What is the sine of 30 degrees?

Back

The sine of 30 degrees is 1/2.

Front

What is the cosine of 60 degrees?

Back

The cosine of 60 degrees is 1/2.

Front

What is the tangent of 45 degrees?

Back

The tangent of 45 degrees is 1.

Front

What is the relationship between sine and cosine?

Back

The sine and cosine functions are related by the identity sin²(θ) + cos²(θ) = 1.