Question

please answer this fast.

Answer 1

gIn triangle ABC
sin 30=AB/AC
1/2=AB/AC
AC=2AB.-----(1)



Using Pythagoras theorem

AC^2=AB^2+BC^2
$ac {}^{2} = y {}^{2} + x {}^{2}$
$ac = \sqrt{x {}^{2} + y {}^{2} }$
Using (1)
$ab = \sqrt{x {}^{2} + y {}^{2} } \div 2$