$ABC$ is a triangle with $AC=10$ cm, $BC=12$ cm and $\angle ACB=60{}^\circ$. Find the length

Question

$ABC$ is a triangle with $AC=10$ cm, $BC=12$ cm and $\angle ACB=60{}^\circ$. Find the length of $AB$, correct to $3$ significant figures.

Accepted Answer

$11.1$ cm

Applying Cosine Rule When Given 2 Sides and 1 Included Angle