Find the principal values of the following: cos⁻¹(-1/2)

Question

Find the principal values of the following: cos⁻¹(-1/2)

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Bella 1 week 2021-10-07T11:46:47+00:00 2 Answers 0 views 0

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    0
    2021-10-07T11:47:59+00:00

    Step-by-step explanation:

    see answer in above attachement

    0
    2021-10-07T11:48:14+00:00

    Answer:

    the answer is 2pie3

    Step-by-step explanation:

    hope it helps mark me as brainliest.

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18:9+8+9*3-7:3-1*13 = ? ( )