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FEECHKAWINX1488
@FEECHKAWINX1488
July 2022
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Найдите значение выражения ((sin^2 17° + sin^2 73)/4)— 1/2 cos 60
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tseluyko58
Verified answer
((sin²17+sin²(90-17))/4-1/2cos60=(sin²17+cos²17)/4-1/2*1/2=1/4-1/4=0
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((sin²17+sin²(90-17))/4-1/2cos60=(sin²17+cos²17)/4-1/2*1/2=1/4-1/4=0