True or false: cosu+cosv=cos(u+v), for all u and v ?
I know this relates to the sum and difference identities but I don't get the concept of how this works?
I know this relates to the sum and difference identities but I don't get the concept of how this works?
1 Answer
Nov 7, 2017
No. They are not equal.
Explanation:
It can be combined as under: