SOLUTION: B. Rewrite each expression as a function of a single angle. You do not need to solve for the function at that angle. 2 sin 63° cos 63°

Algebra ->  Trigonometry-basics -> SOLUTION: B. Rewrite each expression as a function of a single angle. You do not need to solve for the function at that angle. 2 sin 63° cos 63°      Log On


   

Question 1205810: B. Rewrite each expression as a function of a single angle. You do not need to solve for the function at that angle.
2 sin 63° cos 63°
Answer by ikleyn(52909) About Me  (Show Source):
You can put this solution on YOUR website!
.
Rewrite each expression as a function of a single angle.
You do not need to solve for the function at that angle.
2%2Asin%2863%5Eo%29%2Acos%2863%5Eo%29
~~~~~~~~~~~~~~~~~~~~~ 


Use the formula of double argument for sine function

    sin(2a) = 2*sin(a)*cos(a)


and get

  2%2Asin%2863%5Eo%29%2Acos%2863%5Eo%29 = sin(2*63°) = sin(126°).    ANSWER


The last expression is what you want to get.

Solved.