If x =4 cos A + 5 sin A and y = 4 sin A...

If ` x =4 cos A + 5 sin A and y = 4 sin A - 5cos A ` , then the value of ` (x^(2) + y^2)` is :

A

16

B

25

C

0

D

41

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The correct Answer is:

D

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