Question

Prove when A=B in Sin(A+B)
​

Answer 1

Answer:

sin(A+B)=sinAcosB+cosAsinB

Step-by-step explanation:

we know that A=B. then sinAcosA+cosAsinA and we also know that sinA=1/cosA then sinA×1/sinA+cosA×1/sinA= 1+1=2

Answer 2

Answer:

Answer:

sin(A+B)=sinAcosB+cosAsinB

Step-by-step explanation:

we know that A=B. then sinAcosA+cosAsinA and we also know that sinA=1/cosA then sinA×1/sinA+cosA×1/sinA= 1+1=2

Step-by-step explanation:

Hope this answer will help you.✌️