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Show that :Sin²45°+Cos²45°=1 |
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Answer» Sin²+Cos²=1. (identity) NowSin²45+cos²45 =1Proved Second method÷since sin^2A+cos^2A=1. therefore, sin^245+cos^245=1 (1/√2)^2+(1/√2)^2=1/2+1/2=1 |
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