1.

If sec θ – tan θ = P, then cosec θ = ?

A. \(\frac{{{{\rm{P}}^2} + 1}}{{1 - {{\rm{P}}^2}}}\)
B. \(\frac{{1 - {{\rm{P}}^2}}}{{1 + {{\rm{P}}^2}}}\)
C. \(\frac{{2{\rm{P}}}}{{1 - {{\rm{P}}^2}}}\)
D. \(\frac{{2{\rm{P}}}}{{1 + {{\rm{P}}^2}}}\)
Answer» B. \(\frac{{1 - {{\rm{P}}^2}}}{{1 + {{\rm{P}}^2}}}\)


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