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Prove that sin²48°+sin²42° = 1 |
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Answer» Answer: SIN and cos are COMPLEMENTARY RATIOS => sinθ = cos(90°-θ) sin²48° + sin²42° = sin²48° + cos²(90-42)° = sin²48° + cos²48° = 1 = R.H.S [sin²θ + cos²θ = 1] |
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