Using equivalent angles, it is found that the coterminal angle is of 270º.
Equivalent Angles:
- In the trigonometric circle, ranging from 0 to 360º, each angle has an equivalent on the each quadrant.
- A negative angle is given by the trigonometric circle in clock-wise rotation, hence, to convert to positive, we keep adding 360º.
In this problem:
- -450 + 360 = -90º, which means that the original angle gave more than one lap of the circle.
- Adding again, -90 + 360 = 270º, which is the coterminal angle.
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