Two Vertical buildings 91 metres apart are136 metres and 192 metres high respectively. Find the angle of elevation form the top
of the shorter building o the top of the taller building to the nearest degree
1 answer:
Answer:
≈ 32°
Step-by-step explanation:
Distance between buildings= 91 m
Elevation difference= 192 m- 136 m= 56 m
Right triangle ΔABC is formed by connecting 3 points, see attached
∠C is one to be calculated
tan C=AB/AC= 56/91
tan C= 0.62
∠C ≈ 32°
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<em>∠B = (90°-32°)= 58° in case I misread which angle to be found</em>
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Answer:
The estimated taken to drive downtown using App is 38.4 minutes
Step-by-step explanation:
Given as :
The initial time taken to drive downtown = i = 48 minutes
The percentage error of time = r = 20%
Let The estimated time using app = t min
Let the time = 1 min
<u>Now, according to question</u>
The estimated time using app = The initial time taken to drive downtown ×
Or, t minutes = i minutes ×
Or, t = 48 minutes ×
Or, t = 48 minutes ×
Or, t = 48 minutes ×
∴ t = minutes
I.e t = 38.4 minutes
Or, The estimated time using app = t = 38.4 min
Hence, The estimated taken to drive downtown using App is 38.4 minutes Answer
No rounding is necessary to answer the question.
We can subtract the (linear) density of the second box from that of the first to see which box is heavier per unit height.
This value is obviously less than zero, so ...
... the box of magazines has the greater mass per unit height.
_____
The question didn't ask for the mass per height, and we didn't compute it. All we did was make a conversion to comparable units. The units we ended up with are mixed English and metric units, but that doesn't matter for the purpose of comparison.
Since all we're really interested in is <em>the sign of the difference</em> of mass/height, we don't even need to actually compute that difference. We just need to do enough computation to be able to tell whether the sign is positive or negative.