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If (sin theta+ cosec theta)^2+ (cos thet...

If `(sin theta+ cosec theta)^2+ (cos theta+sec theta)^2= k+tan^2 theta+ cot^2 theta`, then the value of k is equal to:
यदि `(sin theta+ cosec theta)^2+ (cos theta+sec theta)^2= k+tan^2 theta+ cot^2 theta` है, तो k का मान ज्ञात कीजिए।

A

7

B

5

C

9

D

2

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