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If U=sqrt(a^(2)cos^(2) theta+ b^(2) sin^...

If `U=sqrt(a^(2)cos^(2) theta+ b^(2) sin^(2) theta)+ sqrt(b^(2)cos^(2) theta+ a^(2) sin^(2) theta)` then the difference between the maximum and minimum values of `U^(2)` is given by

A

`2(a^(2)+b^(2))`

B

`(a-b)^(2)`

C

`(a+b)^(2)`

D

`2sqrt(a^(2)+b^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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