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vlad2613
@vlad2613
September 2021
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Упростите выражение 2sin (a-п/2) * cos (п+a) - cos(п/2 + а) * sin (п-а) - cos(в квадрате) а
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DariosI
Verified answer
2*sin(-(π/2-a))*(-cosa)-(-sina)*sina-cos²a=-2cosa*(-cosa)+sin²a-cos²a=2cos²a+sin²a-cos²a=cos²a+sin²a=1
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vlad2613
Счастья тебе чувак
DariosI
Не чувак - чувиха : )
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Verified answer
2*sin(-(π/2-a))*(-cosa)-(-sina)*sina-cos²a=-2cosa*(-cosa)+sin²a-cos²a=2cos²a+sin²a-cos²a=cos²a+sin²a=1