How do you find the general solutions for #4cos^2 (x) - 3 = 0#?

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How do you find the general solutions for #4cos^2 (x) - 3 = 0#?

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Answer 1 · 2015-08-15T16:35:27

Use algebra

Explanation:

#4 cos^2 x - 3 = 0#
#cos^2 x = 3/4#
#cos x = pmsqrt(3)/2#
#x = pi/3 + kpi, (2pi)/3 +kpi#
#x = pi/3 (1 + 3k), pi/3 (2+3k), k in ZZ# (i.e. #k# is an integer)

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How do you find the general solutions for #4cos^2 (x) - 3 = 0#?

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