Question

Enter the number that belongs in the green box. 56° 78° 12 [? Round to the nearest hundredth.​

Answer 1

Set your calculator to degree mode.

Using the Law of Sines:

sin(56°)/12 = sin(78°)/x

x sin(56°)/12 = sin(78°)

x = 12sin(78°)/sin(56°) = 14.16