Question

sin2a+sin2b+sin2c-sin2(a+b+c) =4sin(b+c)sin(c+a)sin(a+b)​

Answer 1

Hey mate,

Here is your answer :

$\huge\mathbf{{\fcolorbox{silver}{silver}{Hey mate, }}}$

$\huge\mathbf{{\fcolorbox{silver}{silver}{ Answer :}}}$

$\huge\mathbf{{\fcolorbox{silver}{silver}{I am glad to help}}}$