Question

sin a/2 =
Options
a) $\sqrt{\frac{(s+b)(s+c)}{bc} }$
b) $\sqrt{\frac{(s-b)(s-c)}{bc} }$
c) $\sqrt{\frac{bc}{(s-b)(s-c)} }$
c) $\sqrt{\frac{s(s-a)}{bc} }$

Answer 1

$sin \:a/2\sqrt{\frac{(s+b)(s+c)}{bc} }$