A parallelogram has an angle of 50 degs and sides of 5 and 10 inches. What are the lengths of the diagonals? Round each to the nearest tenth of an inch.
for the short diagonal x,
x^2 = 5^2+10^2-2*5*10 cos50°
for the long diagonal y,
y^2 = 5^2+10^2-2*5*10 cos130°