# Linear Algebra Examples

Step 1

Apply the direction angle formula where and .

Step 2

Step 2.1

Remove parentheses.

Step 2.2

Simplify .

Step 2.2.1

Move the negative in front of the fraction.

Step 2.2.2

Evaluate .

Step 1

Apply the direction angle formula where and .

Step 2

Step 2.1

Remove parentheses.

Step 2.2

Simplify .

Step 2.2.1

Move the negative in front of the fraction.

Step 2.2.2

Evaluate .

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