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| Math Central | Quandaries & Queries |
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Question from Robert, a student: cos x is greater than root 3 over 2 Restrictions: between 0 and 2pi |
Robert,
√3/2 should make you think of the 1-2-√3 triangle.
For what angle x is cos(x) = √3/2.
Sketch a graph of y = cos(x) for 0 ≤ x ≤ 2π. Put the x-value you found above on the sketch. What part of the graph lies above the line y = √3/2?
Harley
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