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

Problem

sin⁡3αcos⁡2α<0\frac{\sin3\alpha}{\cos2\alpha}<0 if α\alpha lies in (1) (13π/48,14π/48)(13\pi/48,14\pi/48) (2) (14π/48,18π/48)(14\pi/48,18\pi/48) (3) (18π/48,23π/48)(18\pi/48,23\pi/48) (4) Any of these intervals

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