Предмет: Математика, автор: yuliabryndo

tqα = -√2; 3π/2<α< 2π.

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Автор ответа: iiqwilxz

Ответ:5

Пошаговое объяснение:√30sinα - ? по условию tqα =√5 >0 ⇒α∈(π;3π/2) , где sinα <0. ctqα =1/tqα =1 / √5 ;1+ctq²α =1/sin²α ;:sinα = - 1/√(1+ctq²α) . sinα = -1/√(1+1/5) = -√5/√6 ; √30sinα =√30*(-√5/√6)= -√5*√6*√5/√6) = - 5 .

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