PLEASE HELP QUICK WILL GIVE BRAINLYIST!!!!
2 answers:
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Answer:
Step-by-step explanation:
Using the product to sum formula
sinxcosy = [ sin(x + y) + sin(x - y) ] , then
2sinxcosy = sin(x + y) + sin(x - y)
Given
2sin75°cos15° ← with x = 75 and y = 15 , then
= sin(75 + 15) + sin(75 - 15)
= sin90° + sin60°
= 1 +
=