# M:N:MC:15

Exam

Learn more about this exam.

Skill

Learn more about Additional Topics in Math.

It is given that where *x* is the radian measure of an angle and

If which of the following could be the value of *w*?

### Select an Answer

### View Correct Answer

Choice B is correct. If an angle with radian measure *x* such that is placed in standard position, its terminal side will fall in Quadrant II, and will be the *y*-coordinate of the point *P *where its terminal side intersects the unit circle. If then when the angle with radian measure *w* is placed in standard position, its terminal side will intersect the unit circle at a point with *y*-coordinate equal to There are two such points on the unit circle: the reflection of *P* across the *x*-axis, which would correspond to an angle with radian measure *–x* (and also with radian measures... and the reflection of *P* through the origin, which would correspond to an angle with radian measure (and also with radian measures ... Thus, of the choices given, only could be the value of *w*.

Choice A is not the correct answer. In general, and so Therefore, not

Choice C is not the correct answer. In general, so , not

Choice D is not the correct answer. In general, so not

Students must be fluent with radian measure and have a conceptual understanding of trigonometric relationships.