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kovgandara975
@kovgandara975
November 2023
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СРОЧНО!Спростіть вираз: 1) 1+sin^ 60^ +cos^ 60^ ;2)2cos^ 45 deg + sin 45 deg - 1 .
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1) 1 + sin^60° + cos^60° = 1 + (sin^2 60° + cos^2 60°) = 1 + 1 = 2.
2) 2cos^45° + sin45° - 1 = √2 + √2 - 1 = 2√2 - 1.
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Answers & Comments
1) 1 + sin^60° + cos^60° = 1 + (sin^2 60° + cos^2 60°) = 1 + 1 = 2.
2) 2cos^45° + sin45° - 1 = √2 + √2 - 1 = 2√2 - 1.