A parallelogram has sides of length 36.4 centimeters and 21.5 centimeters. The lesser diagonal is 38.9 centimeters long. What are the interior angles of the parallelogram?
1 Answer
Interior angles are:
Explanation:
From the given data: A parallelogram has sides of length 36.4 centimeters and 21.5 centimeters. The lesser diagonal is 38.9 centimeters long. What are the interior angles of the parallelogram?
We have the half of the parallelogram forming a triangle with sides
Interior angles are
using cosine law
the other angle
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