Question

IF COS ,(A+B+C) =COSA COSB.CosC then show that
sin (A+B) Sin (B+C) sin(C+A):-( SIDA SOB.
sic COSA. COSB
. Cosa​

Answer 1

Answer:

ya it's too easy once in 10th I was the one and only one ranker to score 50/50 in trigonometry.......(⌐■-■)