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31 March, 22:13

Solve the equation for principal values of x. Express solutions in degrees.

2cosx + 1 = 0

A. 330°

B. 60°

C. 30°

D. 120°

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Answers (1)
  1. 31 March, 23:21
    0
    [D] 120°

    Step-by-step explanation:

    just got done with the practice on solving trig equations; this is the right answer on edge
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