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The solution set of equations is
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Correct option is A
cos5x=1+sin4xMinimum value of R.H.S is 1and maximum value of L.H.S is 1. so equality holds only when both sides are simultaneously equal and equal to 1.⇒ cosx=1 and sinx=0⇒ cosx=1⇒x=2nπ and sinx=0⇒x=nπ So, solution set is x=2nπ, n∈ITalk to our academic expert!
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