SOLUTION: A parallelogram has sides of length 36.4 cm and 21.5 cm. If the longer diagonal has a length of 38.9 cm, what is the angle opposite this diagonal?
I have tried drawing a picture
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Question 252102: A parallelogram has sides of length 36.4 cm and 21.5 cm. If the longer diagonal has a length of 38.9 cm, what is the angle opposite this diagonal?
I have tried drawing a picture and setting up an equation but I cant figure it out.
Thanks
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Hint: use the law of cosines where 'a', 'b', and 'c' are the lengths of the triangle and 'A' is the angle opposite the side 'a'. So this problem will make and you'll let 'b' and 'c' be equal to the remaining values given. Let me know if this helps at all.
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