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13 November, 15:13

What is the approximate value of theta if cos theta = 8/15

A. 58

B. 32

C. 28

D. 62

E. 48

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Answers (1)
  1. 13 November, 16:24
    0
    Cos (Ф) = 5/12

    arcos (5/12) = cos⁻¹ (5/12) = Ф

    Then cos⁻¹ (5/12) = 57.769 and Ф = 58
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