PLEASE HELP: A helium-filled balloon is attached to a long string and is at a height of 78 m from the ground. The string is tied to a hook on the ground and makes an angle of 30° with the ground, as shown below.

What is the length of the string, in meters?

A. 90.07 m
B. 78 m
C. 110.29 m
D. 156 m

Question

PLEASE HELP: A helium-filled balloon is attached to a long string and is at a height of 78 m from the ground. The string is tied to a hook on the ground and makes an angle of 30° with the ground, as shown below.

What is the length of the string, in meters?

A. 90.07 m
B. 78 m
C. 110.29 m
D. 156 m

anonymous · Answer

Sin30=(78/x) where x is the length of string
X=156

anonymous · Answer

Thank you do much, can you help me with another one?

anonymous · Answer

The picture below shows a right triangle shaped charging stand for a gaming system. 

A. 7/ cot55 

B. 7 cos 55 

C. 7/ sin55

D. 7 cot 55

anonymous · Answer

@urkhada @tanmaykhandait

anonymous · Answer

Way do u want to find?

anonymous · Answer

Let x be the base of the charger
Therefore...cot55=(x/7)
As cot of any angle is (adjacent side/opposite side)

anonymous · Answer

@tanmaykhandait 
Which expression shows the length, BC, of the base of the stand? My bad

anonymous · Answer

Option d