Use the dot product to find |v|when v= (-2,- 1)

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

step-by-step explanation:

the answer to this is a. a^2 + b^2 = c^2