Question

If two rectangular components of a vector are unit each, then the magnitude of that vector is (A) 1 (B) 2 (C) 1.414 (D) 1.732​

Answer 1

Explanation:

Correct option is

B

12

π

let

a

=(2,2) and b=1,

3

we need the angle between the two vectors let angle be \theta Then

a

.

b

=abcos\theta

so 2+

3

=(2,

2

)(2)cosθ

so,cosθ=

2

2

1+

3

so θ=cos

−1

2

2

1+

3

=

12

π

Answer 2

what is the difference between factual and discursive passage

Explanation:

pls answer