Friday

October 24, 2014

October 24, 2014

Posted by **Anonymous** on Thursday, July 12, 2012 at 11:46am.

tan22.5

write the product as a sum

sinxsin5x

write the sum as a product

sin2x-sin7x

- pre calc -
**JQuiroz**, Sunday, May 26, 2013 at 7:17pmsinxsin5x

sinucosv= 1/2[cos(u-v)-cos(u+v)]

= 1/2[cos(x-5x)-cos(x+5x)]

= 1/2[cos(-4x)-cos(6x)]

= 1/2cos4x-1/2cos6x

**Answer this Question**

**Related Questions**

Math (Calc) - Find the Exact value of Pi/24. I'm not sure whether to use a half-...

Math - 1. use the suitable product-to-sum formula to rewrite the following ...

MATH - 1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...

math - Find the two numbers that multiply to the product number and add to the ...

pre calc - Use the sum-to-product formula to simplify the expression: If sin 52...

pre-calc - The sum of two numbers is radical 3. Find the largest possible value ...

pre-calc - The sum of two numbers is radical 3. Find the largest possible value ...

pre-calc - The sum of two numbers is radical 3. Find the largest possible value ...

PRE CALC - Which combination of limit properties is required to evaluate this ...

Trig - I have these sum and product property problems and I just want to make ...