Mathematics, 07.07.2019 03:00 ayoismeisjjjjuan
How does cot(x)sin(x)=cos^3(x)+cos(x)sin^2(x )?
Answers: 1
![R=\cos(x)[\cos^2(x)+\sin^2(x)]=\cos(x)\cdot1=\cos(x)\\\\L=\dfrac{\cos(x)}{\sin(x)}\cdot\sin(x)=\cos(x)\\\\L=R\\\\\text{used:}\\\\\sin^2x+\cos^2x=1\\\\\cot x=\dfrac{\cos x}{\sin x}](/tpl/images/0060/2240/8a602.png)
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How does cot(x)sin(x)=cos^3(x)+cos(x)sin^2(x )?...
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