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Mathematics 21 Online
OpenStudy (anonymous):

express as a single fraction the exact value of sin 75

OpenStudy (anonymous):

The last question I answered for you was wrong

OpenStudy (anonymous):

You should be able to correct the mistake now though, as you ahve seen the process

OpenStudy (mertsj):

sin75=sin(45+30) Now use the formula for sin(x+y)

OpenStudy (anonymous):

what formula is that?

OpenStudy (mertsj):

Don't you have a book?

OpenStudy (mertsj):

sin(x+y)=sinxcosy+cosxsiny

OpenStudy (anonymous):

nvm i got it thanks

OpenStudy (mertsj):

yw

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