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Posted by on Sunday, May 15, 2011 at 2:44pm.

Given cos X = -0.147, find two possible values for X that are not co-terminal.

  • Algebra 2 / Trig - , Sunday, May 15, 2011 at 3:00pm

    X = appr. 98.45° or X = 261.55°

    The first of these in in quadrant II, the second is in III, thus they are not coterminal.

  • Algebra 2 / Trig - , Sunday, May 15, 2011 at 3:06pm

    Thank you. Can you explain how to do this?

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