Find | vec a | for vec a = (3, -4).

Find $∣ a ∣$ for $a = (3, - 4)$ .

Free questions with an explanation for every one, and full timed EJU Japan mock tests.

Find $∣ a ∣$ for $a = (8, - 15)$ .
Find $∣ a ∣$ for $a = (6, - 8)$ .
For $a = (5, 3)$ and $b = (- 5, - 1)$ , find $a \cdot b$ .
For $a = (2, - 5)$ and $b = (0, 3)$ , find $a \cdot b$ .
Find $∣ a ∣$ for $a = (5, - 12)$ .
For $a = (5, - 2)$ and $b = (- 2, - 1)$ , find $a \cdot b$ .