I'm supposed to find the coordinates of point P, at the angle of 90 on a circle with a radius of 4.9 rounding to three decimals. ( ? , ? ).

Answer 1

Angles start at the positive x-axis and rotate counterclockwise (up-left). If you go 90° you would be on the positive y-axis.

You start at a radius of 4.9 so the initial starting point is (4.9, 0). If you rotate 90°, what is your location? (Hint: You are still at a radius of 4.9 but now instead of to the right you are up.)