A helium-filled balloon is attached to a 100 m long string. The string is tied to a hook on the ground and it makes an angle of 60° with the ground.

What is the height of the balloon from the ground?

Question

A helium-filled balloon is attached to a 100 m long string. The string is tied to a hook on the ground and it makes an angle of 60° with the ground.

What is the height of the balloon from the ground?

anonymous · Answer

50 m
		86.6 m
		70.72 m
		100 m

anonymous · Answer

100 times cosine(60) = 50.

anonymous · Answer

thank you, can you help with this one too

anonymous · Answer

A rocket travels 40 km vertically upward at a 90° angle from point A to point B.  It then moves a distance of 40 km along the line segment BC

What is the height of the rocket, at point C, from the ground?

anonymous · Answer

40 km
60 km
70 km
80 km