Question

sinA+sinB=√3(cosB-cosA) then

sin3A+sin3B​

Answer 1

The answer is in attachment

thank you

Answer 2

$\sin( a ) + \sin(b) = \sqrt{3} ( \cos(b) - \cos(a) \\ multiply \: three \: on \: both \: sides \\ \sin3(a) + \sin3(b) = 3 \sqrt{3} ( \cos(b) - \cos(a) )$

I hope this is the answer