### Home > CALC > Chapter 11 > Lesson 11.1.3 > Problem 11-34

11-34.

For each vector drawn at right:

Rewrite the vector in both component and

**i**,**j**form.A = –1

**i**+ 3**j**Find each vector's standard angle.

Solve tan(

*θ*) = 3/1. This will solve for the angle in the slope triangle for A.

Recall that the standard angle is measured from the positive-axis.Find

and . Determine

. The double bars mean "the magnitude of". To calculate the magnitude of vector B, use the Pythagorean Theorem.