Trig Chapter 2 Test 2025

Front

What is the definition of an angle in standard position?

Back

An angle in standard position is an angle whose vertex is at the origin of a coordinate system and whose initial side lies along the positive x-axis.

Front

How do you convert an angle from degrees to radians?

Back

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

Front

What is the sine function?

Back

The sine function, sin(θ), 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 cosine function?

Back

The cosine function, cos(θ), 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 tangent function?

Back

The tangent function, tan(θ), is defined as the ratio of the sine of the angle to the cosine of the angle, or the ratio of the opposite side to the adjacent side in a right triangle.

Front

How do you find the sine of an angle using a calculator?

Back

To find the sine of an angle using a calculator, ensure the calculator is in degree mode, then input the angle and press the 'sin' button.

Front

What is the range of the sine function?

Back

The range of the sine function is from -1 to 1.

Front

What is the range of the cosine function?

Back

The range of the cosine function is from -1 to 1.

Front

What is the range of the tangent function?

Back

The range of the tangent function is all real numbers.

Front

How do you round a number to the nearest hundredth?

Back

To round a number to the nearest hundredth, look at the third decimal place. If it is 5 or greater, round up the second decimal place by one.