How to find the area and perimeter of a parrallogram?
1 answer:
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Answer:
The distance from hot air balloon to the ground .
Step-by-step explanation:
Labelled diagram of given scenario is shown below.
Given that,
An angle of elevation of Hot air balloon by Angie is °.
When she stepped back then angle of elevation was
°.
Height of Angie is .
To find: How far off the ground is a hot air balloon.
So, from figure
Height of Angie
In triangle Δ,
⇒
⇒ ....................(1)
Now, In triangle Δ
⇒
⇒
Here, substituting the value from Equation (1) we get,
⇒
⇒
⇒
Now, finding the value of from equation (1)
Therefore Length of =
.
Hence,
The distance from hot air balloon to the ground .
Answer:
She has 27 students now.
Step-by-step explanation:
Given :
The teacher has 30 students
10% students left.
To find : how much students does she have now?
Solution :
Since we are given that teacher has 30 students .
And 10% of students left
⇒ 10% of 30
⇒
⇒
⇒
Thus, 3 students left .
She had 30 students . three students left.
So, now she have 30 - 3 = 27 students .
Hence she has 27 students now.