SOLUTION: what is the value of 4sin5π/12 cos5π/12? a. √2 b. 1 c. √3 d. -1 thanks!

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Question 1125852: what is the value of 4sin5π/12 cos5π/12?
a. √2
b. 1
c. √3
d. -1
thanks!
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


Use sin%282x%29+=+2sin%28x%29cos%28x%29

4sin%285pi%2F12%29cos%285pi%2F12%29+=+2sin%285pi%2F6%29+=+2%281%2F2%29+=+1

Answer b.