Summative Assessment_Precal

1. __________ is defined as a position of an angle where its vertex is at the origin and its initial side coincides with the positive x-axis.

2. __________ are angles with the initial side on the positive x-axis and have a common terminal side.

3. The __________ of theta is the acute angle formed by the terminal side of theta and the x-axis.

4. One of the equivalents of 360 degrees is 2pi ________.

5. A ________ is the measure of the central angle subtended by an arc of a circle whose length is equal to the radius of the circle.

6. There is one and only one reference angle for the given theta.

• TRUE

• FALSE

7. We can find the reference angle of -170 degrees in the 2nd quadrant.

• TRUE

• FALSE

8. Reference angle is always an acute angle.

• TRUE

• FALSE

9. Zero and 360 degrees angles are equal in value.

• TRUE

• FALSE

10. Sin 90° is equal to 1.

• TRUE

• FALSE