Answer:
To find the altitude of the airplane, you can use the tangent function. The tangent of an angle is equal to the ratio of the length of the side opposite the angle to the length of the side adjacent to the angle. In this case, the angle is 70 degrees and the side adjacent is the altitude you are trying to find.
The equation you would use is:
tan 70° = altitude / 800
To solve for the altitude, you can rearrange the equation:
altitude = 800 * tan 70°
Now you can calculate the altitude by multiplying 800 by the tangent of 70 degrees.