Question

elevation of the sun?
A kite is flying with a thread 80 m long. If the thread is assumed stretched straight and
makes an angle of 60° with the horizontal, find the height of the kite above the ground.
string between​

Answer 1

Step-by-step explanation:

Height of building AD= 10 m (given)

Height of kite from ground BC= 80 m

∴ height of kite from the top of the building = (80-10)= 70 m.

The angle between the thread and building θ=30∘

consider the length of the thread = DC= X m.

For right triangle. If θ is one of the acute angles in Δ,

then sinθ is ratio of opposite side to hypotenuse.

In ΔDEC,ΔDEC is right angle triangle

sinθ=DCCE

sin30∘=x70

21=x70

x=140m

The length of the thread = 140 m