invisadude
express as a single fraction the exact value of sin 75



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BlingBlong
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The last question I answered for you was wrong

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

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

invisadude
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what formula is that?

Mertsj
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Don't you have a book?

Mertsj
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sin(x+y)=sinxcosy+cosxsiny

invisadude
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nvm i got it thanks

Mertsj
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yw