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

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

Algebra.Com

Question 594088: Rewrite each expression as a product. Simplify if possible.
cos45(degrees) + cos15(degrees)
Answer by jim_thompson5910(35256) (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 $\cos(45) + \cos(15) = \sqrt{3}\cos(15)$
RELATED QUESTIONS
Rewrite the following as a product of trigonometric functions. cos 8 degrees-cos 24... (answered by solver91311)

Rewrite the expression as a sum or difference, then simplify if possible.... (answered by Edwin McCravy)

Use properties of logarithms to rewrite each expression as the sum, difference, or... (answered by solver91311)

Rewrite as a product, then simply if possible:... (answered by tommyt3rd)

Without using tables find the values of (a) (tan69� + tan66�)/(1 - tan69�tan66�)... (answered by ikleyn)

Rewrite as a sum, then simplify if possible:... (answered by Edwin McCravy)

I really need help with this problem: Use the sum-to-product formula to simplify the... (answered by rothauserc,stanbon)

Rewrite 2sin(30 degrees)*cos(30 degrees) as a single trig... (answered by Alan3354)

Simplify the following as much as possible leaved the answer in exact form: sin 225... (answered by venugopalramana)