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The expression tan ^(2) alpha+cot ^(2) a...

The expression `tan ^(2) alpha+cot ^(2) alpha` is

A

`ge 2`

B

`leq 2`

C

`ge-2`

D

none of these

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HIMALAYA PUBLICATION-MEASUREMENT OF ANGLES, TRIGONOMETRIC RATIOS AND RELATION BETWEEN SIDES AND ANGLES OF A TRIANGLE-QUESTION BANK
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