Question

please Answer these Questions step by step.............​

Answer 1

Answer:- 2

Projection of given vector on Y-Z plane will be

$r = 1j \: + 2k$

Magnitude :

$m = \sqrt{ {1}^{2} + {2}^{2} }$

$= > \sqrt{1 + 4}$

$= > \sqrt{5}$

Answer :- 3

Projection of given vector on X-Z plane will be

$r = 2k + 3i$

Magnitude:-

$m = \sqrt{ {2}^{2} + {3}^{2} }$

$= > \sqrt{4 + 9}$

$= > \sqrt{13}$

Answer :- 4

$2 \sqrt{5}$

Answer 4 In Attacment please Cheak It :-

Answer 2

Answer:

which class is this o don't know sorry