1.

If cos θ = 2p/(1 + p2), then tan θ is equal to:

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


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