Understanding Reference Angles and Terminal Points

Find the midpoint of the line

Determine the cosine of the angle

Plot the point on the coordinate plane

Calculate the sine of the angle

y minus x

x divided by y

y divided by x

x plus y

Use the inverse cosine function

Use the inverse sine function

Use the inverse tangent function

Use the inverse cotangent function

To get the angle in degrees

To ensure the angle is in radians

To convert the angle to a fraction

To simplify the calculation

1.2925 radians

2.2925 radians

4.2925 radians

3.2925 radians

They are unrelated

They have different tangent values

They have the same tangent value

They are complementary

Divide the reference angle by pi

Multiply the reference angle by pi

Add the reference angle to pi

Subtract the reference angle from pi

3.43 radians

4.43 radians

5.43 radians

6.43 radians

Because the cosine function is negative

Because the sine function is positive

Because the tangent function is positive

Because the tangent function is negative

The tangent function value is positive

The sine function value is positive

The cosine function value is negative

The tangent function value is negative