Guest

prove that : sin a + sin b + sin c - sin (a+b+c)= 4 sin (a+b/2) sin (b+c/2) sin (c+ a/2)

prove that : sin a + sin b + sin c - sin (a+b+c)= 4 sin (a+b/2) sin (b+c/2) sin (c+ a/2)

Grade:11

0 Answers

No Answer Yet!

Answer The Question & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free