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10 September, 21:51

An angle co-terminal with 5pi/7 is:

a) - 9pi/7

b) - 2pi/7

c) 12pi/7

d) 20pi/7

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Answers (1)
  1. 11 September, 01:34
    0
    To find co-terminal angles, add or subtract 2π. Make sure the denominator is the same as the original problem.

    5π/7

    + 14π/7

    19π/7

    5π/7

    - 14π/7

    -9π/7

    a
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