Question

if A=2i+3j and B=i-k are two sides of triangle then area of triangle will be​

Answer 1

Hi mate,

1/2(a vector ×b vector)

here use cross product.

Thank u

Answer 2

the area of the triangle is given by the

1/2 * |A × B|

where A and B are vectors

the cross product Will be

2j - 3k - 3i

now it's mod is

√( 4 + 9 + 9 )

i.e √22

so area of the triangle is

1/2 *√22