Question 1082364
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<U>Definition</U>


<pre>
   <U>Angle of Depression</U>

   The angle below horizontal that an observer must look to see an object that is lower than the observer. 

   Note: The angle of depression is congruent to the angle of elevation.
</pre>

See <A HREF=http://www.mathwords.com/a/angle_depression.htm>http://www.mathwords.com/a/angle_depression.htm</A>


<pre>
    Therefore,  {{{tan(alpha)}}} = {{{50/950}}},   and

    {{{alpha}}} = arctan(50/950}}} = arctan(0.0526)}}} = 0.0529 rad = 3° (approximately).
</pre>


The  solution by "josgaritmetic" contains a lot of unnecessary calculations and is impractical.