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I have no idea how to solve this problem.

<A is in standard position on a unit circle. Point P (-1/2, -√3/2) is the point of intersection of its terminal side with the unit circle. Find the measure of <A in radians.

  • trig -

    Since the angle in in QIII, use the cos=- 1/2 and sin= -sqrt3/2 and the inverse tan function on your calculator since tan is the y/x and is equal to -sqrt3. angle is 60

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