SOLUTION: Rewrite each expression as a product. Simplify if possible. cos45(degrees) + cos15(degrees)

Algebra ->  Trigonometry-basics -> SOLUTION: Rewrite each expression as a product. Simplify if possible. cos45(degrees) + cos15(degrees)      Log On


   

Question 594088: Rewrite each expression as a product. Simplify if possible.
cos45(degrees) + cos15(degrees)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
cos(45) + cos(15)

cos(30+15) + cos(30-15)

2*cos(30)*cos(15)

2*(sqrt(3)/2)*cos(15)

sqrt(3)*cos(15)


So