Mark M. answered • 02/20/20
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cos x = √3 / 2
cos (x - π/2) = cos x cos π/2 + sin x sin π/2
Can you substitute values and answer?
Alice S.
asked • 02/20/20If sin x=1/2, and 0< x <π/2, what is cos(x−π/6)?
If sin x=1/2, and 0< x <π/2, what is cos(x−π/6)?
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