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17 February, 17:16

What is the value of cos (150°) ?

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Answers (2)
  1. 17 February, 18:49
    0
    cos

    (150) = -√3/2

    cos (30) = √3

    Step-by-step explanation:

    First of all, observe that 150=180-30.

    cos

    (180-x) = -cos (x)

    plug in x=30 to get:

    cos (180-30) = -cos (30)

    cos (30) = - √3/2
  2. 17 February, 20:06
    0
    ya the correct answer is - √3/2

    Step-by-step explanation:

    i just took the assignment. good luck to yall!
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