Given two integers a and b where a and b represents the length of adjacent sides of a parallelogram and an angle
0 between them, the task is to find the length of diagonal of the parallelogram.
Input: a = 6, b = 10,
Input: a = 3, b = 5,
Approach: Consider a parallelogram ABCD with sides a and b, now apply cosine rule at angle A in the triangle ABD to find the length of diagonal p, similarly find diagonal q from triangle ABC.
Therefore the diagonals is given by:
Time Complexity: O(1)
Auxiliary Space: O(1)
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