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Stacy is watching an airplane that is 6 miles away from her and 4 miles above the ground. how many degrees above the horizontal must she look up to see the plane?

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superkueen
I was looking out of my window and saw a plane making a contrail slightly more south west of my ... do I need to work out how far up I am to get a good angle? or is that negated by the fact it is 6 miles up ...
daijingyi722
let the angle be x degree.

tan(x)=4/6
x=tan^-1(4/6)
x=33.69

she must look up about 33.69 degrees.

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