Question

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?

90.07 m

78 m

110.29 m

156 m

Answer 1

is it a Mathematics question ?

Answer 2

@mayankdevnani

Answer 3

yes trig

Answer 4

Okay

Answer 5

@brianjr227 use sin30

\[\huge \bf \sin30^\circ=\frac{??}{??}\]

Answer 6

alright

Answer 7

Can you figure out the this "??" ??

Answer 8

@brianjr227

Answer 9

X over 78?

Answer 10

no

Answer 11

\[\frac{sin(30)}{78}=\frac{sin(90)}{x}\]

Answer 12

\[\huge \bf \sin30^\circ=\frac{perpendicular}{hypotenuse}\]


can you figure out? @brianjr227

Answer 13

sorry @mayankdevnani im on a tablet and it makes it hard to see when others are helping

Answer 14

@mayankdevnani i call it adjacent it that fine?

Answer 15

no, you can't call it.

Answer 16

??

Answer 17

Don't call the hypotenuse the adjacent, because it's the hypotenuse. The longest side is always hypotenuse, never adjacent or opposite.

Answer 18

\[\huge \bf \sin30^\circ=\frac{perpendicular=78}{hypotenuse=string}\]

Answer 19

now,understood. @brianjr227

Answer 20

lol im trying to solve it, so give me a sec

Answer 21

please

Answer 22

*please sorry

Answer 23

no, i mean take your time

Answer 24

lol

Answer 25

@brianjr227 what is the value of sin30?

Answer 26

ok so im updated

Answer 27

what is the value of sin30? @brianjr227

Answer 28

@brianjr227

Answer 29

hold on i did something wrong so im trying to fix it

Answer 30

okk

Answer 31

ok so i did the problem and i got 90.07

Answer 32

no.you are wrong.

Answer 33

yea that's what i thought so now im gonna fix it

Answer 34

\[\huge \bf \sin30^\circ=\frac{1}{2}\]

Answer 35

\[\huge \bf \frac{1}{2}=\frac{78}{string}\]

can you solve it for string? @brianjr227

Answer 36

yes

Answer 37

whats your answer?

Answer 38

times 2 to 78?

Answer 39

156

Answer 40

good...final answer?

Answer 41

good