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duvefihev
@duvefihev
July 2022
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Найдите значение выражения : sin a +cos a , якщо sin a *cos a =0,48. ( знак * - це помножити)
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oganesbagoyan
Verified answer
(sinα+cosα)² =1+2sinα*cosα ;
sinα+cosα = ± √(1+2sinα*cos) ;
sinα+cosα = ± √(1+2*0,48) =± √(1,96 = ± 1,4.
ответ : ± 1,4.
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Answers & Comments
Verified answer
(sinα+cosα)² =1+2sinα*cosα ;sinα+cosα = ± √(1+2sinα*cos) ;
sinα+cosα = ± √(1+2*0,48) =± √(1,96 = ± 1,4.
ответ : ± 1,4.