The ratio of newspapers to magazines at the corner store is 9 to 5. Which combination of newpapers and magazines could the corne
1 answer:
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central angle of a circle whose radius is 8 cm and intercepted arc length is 7.2 cm is 0.9 radians
Step-by-step explanation:
We need to find the central angle of a circle whose radius is 8 cm and intercepted arc length is 7.2 cm.
arc length l== 7.2 cm
radius =r= 8 cm
central angle=Ф = ?
The formula used is:
Putting values:
So, central angle of a circle whose radius is 8 cm and intercepted arc length is 7.2 cm is 0.9 radians
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Answer:
119.45 m
Step-by-step explanation:
Given:
When angle of elevation of the sun changes from 58° to 36° the length of shadow of a pole increases by 90 m.
To find:
Length of pole = ?
Solution:
Kindly refer to the attached image.
represents the 1st angle of elevation of sun i.e. 58°
represents the 2nd angle of elevation of sun i.e. 36°
Change in shadow is represented by CD = 90 m
Let height of pole, AB = m
Let side BC = m
Now, let us apply tangent rules in one by one:
Putting value of using equation (1):
119.45 m is the height of pole.
