Question

If a vector , b vector , c vector are three coplanar unit vectors such that a vector makes 120° with b vector and c vector, then area of triangle formed by a vector ,b vector ,c vector is : a.√3 sq. unit b.3√2 sq. unit c.3√4 sq. unit d.2 sq. unit

Answer 1

Step-by-step explanation:

Three coplanar vectrors

and

have magnitudes

and

respectively. If the angle any two vector is

then which of the following vector may be equal to

<br> <img src="https://.png" width="80%">

Answer 2

Answer:

As given these are unit coplaner vector and yet they form a equilateral triangle so using equilateral triangle area formual =root(3)/2 × (side) square using given information

the correct answer is B.