A plane is flying wt an altitide of 7000feet, directly over metro city. If the plane descend steadily, making an angle of 79° with vertical line, how far will it have to fly fly to reach the airport?

Question

I think we have to use toacahsoh??

Answer 1

the hypotenuse of a right triangle with angle =79

is h=7000/sin79 = slightly over 7131 feet to reach ground level

sin79 = 7000/hypotenuse