Question

sin(A+B)=???????And tan(A+B)=???​

Answer 1

Answer:

So we can conclude that sin(A+B)=sinA +sinB is false in general. But if it is asked when sin(A+B)=sinA +sinB is true. Then our answer will be that either A or B will be equal to nπ or both equal to nπ. A and B are acute angles such that cos (A-B) = 5/13, sin A sin B = 15/26.

Answer 2

Answer:

sin(a+b)=Sina cosb +cosa sinb