SOLUTION: Good day! Sorry I posted my question under the "quadratic equations" category, this one is actually a physics question so I am posting it again, here it goes: A woman on the groun

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Question 633172: Good day! Sorry I posted my question under the "quadratic equations" category, this one is actually a physics question so I am posting it again, here it goes:
A woman on the ground sees an airplane climbing at an angle of 35 degrees above the horizontal. She gets into her car and by driving at 70 miles/hour is able to stay directly below the airplane. What is the airplane's speed?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
If +s+ is the plane's speed in mi/hr then
+s%2Acos%2835%29+ is the horizontal component of the speed in mi/hr
+s%2Acos%2835%29+=+70+ mi/hr
+s+=+70+%2F+cos%2835%29+
+s+=+70+%2F+.81915+
+s+=+85.454+ mi/hr