billymoore billymoore

04-03-2017
Mathematics

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prove sin(3pi-x)=sin x

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keisurin keisurin

04-03-2017

sin(3pi-x)=sinx
divide by sin
3pi-x=x
2x=3pi
x = 3/2 pi

Sub x into equation:
sin(3pi-(3/2)pi)=sin(3/2pi)
3pi-(3/2)pi=3/2pi
3pi=(3/2)pi+(3/2)pi
3pi=3pi

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