Which of the following are identities? Check all that apply. A. sin(x + y) + sin(x - y) = 2cosx siny
B. cos(x + y) - cos(x- y) = 2 cos xcosy
C. tan(x - 7T) = tan x
O D. cos(x + y) + cos(x - y) = 2cos x cosy

351.23

step-by-step explanation:

the answer is thin because within context, the stanza concludes the and frail tone the people have toward each other, and the fact that it would be thin, makes the most sense compared to "pliable" or "not hard or firm to the touch". hope this , good luck.

step-by-step explanation:

can i have brainliest

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation