Question

On a triangle, the vector from one vertex to another vertex is 〈-12,5〉. What is the length of the side?

Answer 1

13

Explanation:

The magnitude of a vector < a, b > is

`√(a^2+b^2)`

Given < - 12, 5 > then the length of the side is

`√((-12)^2+5^2)`

=
`√(144+25)`

=
`√(169)` = 13