Ответ:
Объяснение:
(sin30cosa+sinacos30-cos60cosa+sin60sina)
(sin30cosa+sinacos30+cos60cosa-sin60sina)=(1/2*cosa+√3/2*sina-1/2*cosa+√3/2*sina)/(1/2*cosa+√3/2*sina+1/2*cosa-√3/2*sina)=
=√3sina/cosa=√3tga
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Ответ:
Объяснение:
(sin30cosa+sinacos30-cos60cosa+sin60sina)
(sin30cosa+sinacos30+cos60cosa-sin60sina)=(1/2*cosa+√3/2*sina-1/2*cosa+√3/2*sina)/(1/2*cosa+√3/2*sina+1/2*cosa-√3/2*sina)=
=√3sina/cosa=√3tga