I know how to solve problems using these identities, but I do not understand what these identities are used for and why we have them, or why they are even taught to us in school? Any explainations would be greatly appricated and thanks in advance.
I know how to solve problems using these identities, but I do not understand what these identities are used for and why we have them, or why they are even taught to us in school? Any explainations would be greatly appricated and thanks in advance.