Angle between two curves at their point of intersection

1. A.
   $\frac{8}{15}$
2. B.
   $\frac{8}{17}$
3. C.
   $\frac{4}{9}$
4. D.
   $\frac{7}{17}$

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1. A.
   $\tan^{-1}\frac{15}{8}$
2. B.
   $\tan^{-1}\frac{7}{8}$
3. C.
   $\tan^{-1}\frac{3}{4}$
4. D.
   $\tan^{-1}\frac{1}{4}$

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1. A.
   $\tan^{- 1}\frac{3}{11}$
2. B.
   $\tan^{- 1}\frac{11}{3}$
3. C.
   $\tan^{- 1}\frac{2}{11}$
4. D.
   $\ \tan^{- 1}\frac{1}{11}$

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1. A.
   $\ \tan\theta = \frac{\log\left( \frac{3}{7} \right)}{1 + (\log3)(\log7)}$
2. B.
   $\ \tan\theta = \frac{\log\left( \frac{7}{3} \right)}{1 + (\log3)(\log7)}$
3. C.
   $\ \tan\theta = \frac{\log\left( \frac{3}{7} \right)}{1 - (\log3)(\log7)}$
4. D.
   $\tan\theta = \frac{\log\left( \frac{7}{3} \right)}{1 - (\log3)(\log7)}$

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