Lemma practice generator law-of-cosines #1,352 · Trigonometry · Laws of sines & cosines

Law of cosines

In triangle $A B C$ , $a = 3$ , $b = 10$ and $C = 6 0^{\circ}$ . Find $c$ .

~5 minAnswer checked instantly

Stuck? A gentle nudge

No hints for this one.

Something off?

Workspace

Your answer

Loading the math keyboard…

Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.