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Mathematics 10 Online
OpenStudy (zab505):

Need Help!

OpenStudy (zab505):

OpenStudy (zab505):

@study100

OpenStudy (anonymous):

see sin(x+y)=sinXcosY+cosXsinY and sin(X-Y)=sinXcosY-cosXsinY now add them up and divide by two...and see what comes..true or false..

OpenStudy (zab505):

False?

OpenStudy (zab505):

@zaibali.qasmi

OpenStudy (anonymous):

yes...exatly...

OpenStudy (zab505):

Thank you!

OpenStudy (anonymous):

u welcome..

OpenStudy (zab505):

It was wrong

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