SOLUTION: can someone help me with this problem please? THANK YOU! Write the product as a sum using a product-to-sum identity. cos(-8a)sin(10a)

Algebra ->  Trigonometry-basics -> SOLUTION: can someone help me with this problem please? THANK YOU! Write the product as a sum using a product-to-sum identity. cos(-8a)sin(10a)      Log On


   

Question 1076452: can someone help me with this problem please? THANK YOU!
Write the product as a sum using a product-to-sum identity. cos(-8a)sin(10a)
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.
For the product-to-sum identity see the lessons
    - Product of trigonometric functions
    - Product of trigonometric functions - Examples
in this site.


Also, you have this free of charge online textbook in ALGEBRA-II in this site
    ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Trigonometry".