An airplane is flying at an elevation of 5150 ft, directly above a straight highway. Two motorists are driving cars on the highway on opposite sides of the plane. The angle of depression to one car is 34°, and that to the other is 58°. How far apart are the cars?

Respuesta :

Answer:

The cars are 10853.3 feet apart.

Explanation:

Given:

Height of airplane (H) = 5150 ft

Angle of depression of car 1 (x₁) = 34°

Angle of depression of car 2 (x₂) = 58°

Consider two right angled triangles ABC and ABD as shown below.

AB = H = 5150 ft, ∠ACB (x₁) = 34°, ∠ADB (x₂) = 58°, BC = 'a', BD = 'b'

Now, from triangle ABC, using tangent of the angle, we have

[tex]\tan(x_1)=\frac{H}{a}\\\\a=\frac{H}{\tan(x_1)}\\\\a=\frac{5150}{\tan(34)}=7635.2\ ft[/tex]

Similarly for triangle ABD,

[tex]b=\frac{H}{\tan(x_2)}\\\\b=\frac{5150}{\tan(58)}=3218.1\ ft[/tex]

Now, separation between the two cars is the sum of the distances 'a' and 'b'. So,

Separation = [tex]a+b=7635.2+3218.1=10853.3\ ft[/tex]

Therefore, the cars are 10853.3 feet apart.

Ver imagen DarcySea