A plane flies horizontally at an altitude of 5 km

A plane flies horizontally at an altitude of 5 km and passes directly over a tracking telescope on the ground. When the angle of elevation is pi/3, this angle is decreasing at a rate of pi/6 rad/min. How fast is the plane traveling at that time?

[@madisondean1074]

This saved my ass just now! My Calculus homework is due on Friday this week and I still have one more section to get through!

[@Maya-xs9xn]

Excellent tutorial.

[@chamudihallawaarachchi915]

Thank you so much

[@arifahmad-7261]

Thx

[@Accipitridude]

l ended up with the right value and units (based on the requested rate), but I couldn't figure out the dimensional analysis. How did you go from rad/min to km/min?

[@Accipitridude]

Never mind. I was able to make the conversion.