Answer :
Check the pic attached. It has the solution. Please try to decipher my handwriting sorry if it's bad. Application used is paper by fifty-three. You can use x degrees instead of 30 degrees. By the Whiz Kidd
if 2 lines intersect each other then 4 angles are formed in which two are by the herons formula and it can proved by the formula
HYPOTENUS=UNDERROOTBASE SQAURE + HEIGHT SQUARE
HYPOTENUS=UNDERROOTBASE SQAURE + HEIGHT SQUARE