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Can someone help me out with number 2?
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Can someone help me out with number 2?

Can someone help me out with number 2?-example-1
User Zulie
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\sin255^o=\sin(300^o-45^o)=\sin300^o\cos45^o-\cos300^o\sin45^o= \\\\=- ( √(3) )/(2)\cdot ( √(2) )/(2)- (1)/(2) \cdot ( √(2) )/(2)=- ( √(6) )/(4) - ( √(2) )/(4)= -( √(6)+√(2) )/(4)
Can someone help me out with number 2?-example-1
User Matej Hlavaj
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