# calculus

posted by
**tara** on
.

an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong pane is over the airport.?When will they be the nearest.

i tried the question but because i just started calculus its a hard questions necause it talk about degree left and right so can somebody please help me ?The answer is suppose to be 650 km/h,5.11 min before second plane reaches the airport.Thank you