√sectheta-1/sectheta+1 +√sectheta+1/sectheta-1=2cosectheta
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Answer: 2cosecФ.
Note:-
1) 1/sinФ = cosecФ
2) tanФ = sinФ/cosФ
3) (a+b)(a-b) = a² - b²
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sharmasakshi:
thanks dear
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