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If 2tan^2x-5secx=1 for exactly seven dis...

If `2tan^2x-5secx=1` for exactly seven distinct value of `x in [0,(npi)/2],n in N` then find the greatest value of `ndot`

A

`15`

B

`13`

C

`14`

D

`16`

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RESONANCE ENGLISH-FUNDAMENTAL OF MATHEMATICS-Exercise
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