Question

solve this fast.... ​

Answer 1

Answer:

false

since sin(a+b)= sina*cosb+ cosa*sinb

Answer 2

It is False.

Reason:

sinA is one quantity , we cant separate sin and A,  there is no way that we can separate the two sin from their angles and write sin(A+B)

Also when we write {sinA + sinB} its value can be greater than 1 , such as for A = 90 , B = 60 , But Sin(A+B) can only be less than equal to 1 , such as sin150 = 0.5 .

We can always prove that sin(A+B) = sinAcosB + cosAsinB , which can be shown by taking A = 60 , B = 45