The diagonals of a parellelogram are 20 cm and 30cm long
and intersect at an angle of 25°.
Find the sides of the parellelogram.
i used the Law of Cosines to find one of the sides but i am getting the wrong answer.
I let sides and
and got the wrong answer. Where am i going wrong?
It's really hard to see your work from here! .Could you write larger?
Law of Cosines: .
We have: .