If , , then the number of values of…

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

If 128(sin⁡8x+cos⁡8x)−97=0128(\sin^8 x + \cos^8 x) - 97 = 0 , x∈[0,2π]x \in [0, 2\pi] , then the number of values of xx is (1) 4 (2) 8 (3) 12 (4) 16

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