Question

Calculatia Aria Triunghiului ABC daca AB=2, BC=8 iar mABC=45 (grade)

Answer 1

A=AB·BC·sinABC
=2·8·radical din 2/2
=32radical din 2

Answer 2

$A= \frac{1}{2}AB*BC *sin(\ \textless \ B) \\ A= \frac{1}{2}*2*8*sin45=8* \frac{ \sqrt{2} }{2}=4 \sqrt{2}cm^2$