SOLUTION: Use the sum or difference identities to find the exact value of sin 105 degrees.

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Question 231967: Use the sum or difference identities to find the exact value of sin 105 degrees.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Use the sum or difference identities to find the exact value of sin 105 degrees.
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sin(A+B) = sin(A)cos(B) + sin(B)cos(A)
sin(105) = sin(45 + 60)
= %28sqrt%282%29%2F2%29%2A1%2F2+%2B+%28sqrt%283%29%2F2%29%2Asqrt%282%29%2F2
= sqrt%282%29%2F4+%2B+sqrt%286%29%2F4
= %28sqrt%282%29+%2B+sqrt%286%29%29%2F4