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11 July, 20:35

If sin x = 0.3, what is the value of cos x

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Answers (2)
  1. 11 July, 20:57
    0
    Answer: 0.95
  2. 11 July, 21:02
    0
    Sin² (x) + cos² (x) = 1

    (0.3) ²+cos² (x) = 1

    cos² (x) = 1 - (0.3) ²

    cos² (x) = 1 - 9/100

    cos² (x) = 91/100

    cos (x) = ± (91/100)

    cos (x) = ± 0.91
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