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19 January, 15:46

Find the exact value of each expression. Do not use a calculator.

1. Cos^-1 0

2. Sin^-1

3. Tan^-1 √3/3

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Answers (1)
  1. 19 January, 16:14
    0
    1) 90 degrees

    2) 270

    3) - π/6
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