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६ 2०:१९oLT 75 +0£9 ™° g |
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Answer» sin²63 + sin²27------------------------cos²17 + cos²73 sin² 63 + sin²(90 -63)---------------------------------cos²17 + cos²(90 - 17) sin²63 + cos²63------------------------cos²17 + sin²17 1/1 1 |
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