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Find the value:- 1) 5sin^2 30° + cos^2 45° - 4tan^2 30° by 2 sin 30° cos 30° tan 45° |
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Answer» in²30⁰+cos²45⁰-4tan²30⁰2sin30⁰cos30⁰+tan45⁰5×(1/2)²+(1/√2)²-4×(1/√3)²2×1/2×√3/2+15/4+1/2-4/3√3/2+15/12 √3+2 25/12×2/√3+2= 5 ANS 6(√3+2) |
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