Multiple choice

The top of a mountain is observed from $A$ and $B$ at the sea level. lf $N$ is the point vertically below $P$ and $\angle NAB=\alpha, \angle NBA =\beta, \angle NAP=\Theta, \angle NBP =\phi$ then the value of $\cot\phi\sin\beta$ is

  1. $sin\phi \cot\beta$
  2. $\cot\beta sin\alpha$
  3. $sin\Theta sin\alpha$
  4. $sin\phi sin\alpha$
Reveal answer Fill a bubble to check yourself
B Correct answer

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