Question

Use the dot product to find the magnitude of u.

u = 20i + 25j

Answer 1

Step 1:

The vector is .

The magnitude of u is

.

Dot Product :

If and are vectors, then their dot product, denoted by , is defined by .

Solution :

The magnitude of u is .

Comments

HELLO, HOW IS THE ANDWER NOT 32.01 WHICH IS THE SQAURE ROOT OF 1025?