Final answer:
To find the length of PK in triangle KPS, use the Law of Sines and solve for PK.
Step-by-step explanation:
In triangle KPS, the sum of the angles must equal to 180 degrees. We are given that m∠P = 105° and m∠S = 30°. So, m∠K = 180° - (105° + 30°) = 45°.
Now, we can use the Law of Sines to find the length of PK:
sin(105°) / PK = sin(45°) / 12
PK = (sin(45°) / sin(105°)) * 12
Using a calculator, PK ≈ 10.23