Law of Cosines

Grade 10·21 problems·~30 min·ACT Math·topic·act-geo-trig-lawcosines

Work through problems with immediate feedback

Fluency Practice

In triangle $ABC$ , $a = 7$ , $b = 9$ , and $C = 120\degree$ . Find side $c$ . Round to the nearest tenth.

13.9

11.4

8.0

193.0