Find the general solution of the equation2 – InterviewSolution

1.

Find the general solution of the equation2

Answer»

cos x = - 1/2

Then,cos x = - cos (pi/3)= cos (pi - pi/3)= cos (2pi/3)

We know that range of general value of cos^-1 is (0, pi) andcos (2pi/3) = - 1/2

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