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Trigonometric Ratio And Identites

JEE Main 2022 (Online) 26th June Morning Shift

INTEGER+4 / -12022
যদি \({\sin ^2}({10^ \circ })\sin ({20^ \circ })\sin ({40^ \circ })\sin ({50^ \circ })\sin ({70^ \circ }) = \alpha - {1 \over {16}}\sin ({10^ \circ })\) হয় তাহলে \(16 + {\alpha ^{ - 1}}\) সমান __________ .

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