Q17 A of 44 Page 1057

Find the area of the triangle whose two adjacent sides are determined by the vectors
and

The area of the triangle = , where a and b are it’s adjacent sides vectors.

Area =

Here,

have

⇒

Thus, substituting the values of ,

in equation (i) we get

⇒

⇒ sq units

16 B

Find the area of the parallelogram whose diagonal are represented by the vectors

and

16 C

Find the area of the parallelogram whose diagonal are represented by the vectors

and .

17 B

Find the area of the triangle whose two adjacent sides are determined by the vectors

and .

18 A

Using vectors, find the area of ΔABC whose vertices are

A(1, 1, 2), B(2, 3, 5) and C(1, 5, 5)