Помогите решить sin(a+b)+sin(П/2 - a)sin(-b). Created by kornilova123. algebra-ru

Использовались формулы:1) 2) 3)

2 - a)sin(-b)...

kornilova123 @kornilova123

July 2022 1 3 Report

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sin(a+b)+sin(П/2 - a)sin(-b)

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kalbim

Verified answer

$sin(a+b)-cosa*sinb=sina*cosb+sinb*cosa-cosa*sinb=sina*cosb$

Использовались формулы:
1) $sin(a+b)=sina*cosb+sinb*cosa$
2) $sin( \frac{ \pi }{2}-a)=cosa$
3) $sin(-b)=-sinb$

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kornilova123 August 2022 | 0 Ответы

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Verified answer

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