Please answer. This is really important. I am struggling to figure out the new model to show the time it takes to descend the mountain and the Pythagoras question. Please try to figure this out, it would really help. Thank you in advance, help is very much appreciated.

An airplane is taking off headed due north with an air speed of 173 miles per hour at an angle of 18° relative to the horizontal. the wind is blowing with a velocity of 42 miles per hour at an angle of s47°e. find a vector that represents the resultant velocity of the plane relative to the point of takeoff. let i point east, j point north, and k point up.