cot(45^(@) + theta).cot(45^(@)-theta) का...

`cot(45^(@) + theta).cot(45^(@)-theta)` का मान बराबर है-

A

1

B

इनमें से कोई नहीं

C

`sqrt(2)`

D

0

लिखित उत्तर

Verified by Experts

The correct Answer is:

A

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