Question

Please solve for the side CA.

Answer 1

16 mm

Explanation:

cosine rule: c^2 = a^2 + b^2 - 2abcosC

15^2 + 10^2 - 2(15)(10) × cos(20) = 255.051288633

root 255.051288633 = 15.9703252513

round to 16 for suitable scaling

Answer 2

Boop bop joop jop gloop glop ploop plop