Question

Given that
A=−i+2j+2k
. Find the magnitude of A
3
5

(√3)

(√5)

Answer 1

Answer on Question #56007 – Math – Vector Calculus

Given that $A = -i + 2j + 2k$. Find the magnitude of $A$:

a) 3

b) 5

c) $\sqrt{3}$

d) $\sqrt{5}$

Solution

The magnitude of $A$ is equal to

$$|A| = \sqrt{(-1)^2 + 2^2 + 2^2} = \sqrt{1 + 4 + 4} = 3.$$

Answer. 3.

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