Question

Find the unit vector in the direction of -i + k.​

Answer 1

Answer:

$( - i \: + k) \div \sqrt{2}$

Step-by-step explanation:

The formula for unit vector

$v \div |v|$

v is your original vector

while the denominator is the determinant

$\sqrt{ (- 1) {}^{2} + (1) {}^{2} } = |v|$

which is

$\sqrt{2}$

so final answer is written above