Asked by Anonymous

A parallelogram has sides of 15 and 24 feet and an angle of 40 degrees .Find the diagonals.

I used law of cosines and found 1 of the diagonals to be 15.79 feet but what is the other? or are they the same?
Answered by Steve
hint: consecutive angles are supplementary.
Answered by Anonymous
so use 140 degrees instead?
Answered by Steve
yep. The sides have the same lengths, no matter which angle they surround.