Question

Helppppppp 50 points!!!!!!!!!!!!!

which angle has its terminal side on the positive y-axis?

2pi radians
pi radians
pi/2 radians
3 pi/2 radians

Answer 1

`\sf (\pi)/(2)`

Explanation:

Angles are measured in a counterclockwise direction from the positive x-axis (initial side).

Therefore, if an angle's terminal side is on the positive y-axis, the angle will be 90° or
`\sf (\pi)/(2)` radians.

See attached diagram for visual explanation.

If the angle was
`\pi` then the terminal side would be on the negative x-axis.

If the angle was
`\frac32\pi` then the terminal side would be on the negative y-axis.

If the angle was
`2\pi` then the terminal side would be on the positive x-axis and the angle would be one complete revolution of the circle.