in the accompanying diagram to the right, point P(0.6, -0.8) is on unit circle o. what is the value of theta, to the nearest degree

at point P(0.6,-0.8) the angle is in the 4th quadrant

so, the tan of the angle = -0.8/06 = 306.9 degrees.

That is to say, the angle = tan-1(-0.8/0.6) = 306.9 degrees

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