A circle has a central angle measuring StartFraction 7 pi Over 10 EndFraction radians that intersects an arc of length 33 cm. Wh
1 answer:
The radius of the given circle with a central angle of 7π/10 and arc length of 33cm is 15cm.
It is given that
The central angle of the given circle = 7π/10 radians
Length of arc = 33cm
<h3>What is the formula for arc length?</h3>Arc length = central angle* radius
From the above formula
Radius = Arc length/Central Angle
Radius =
Radius = 15cm
Therefore, radius of the given circle is 15cm.
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Answer:
Option 2 is right
Step-by-step explanation:
Given that
We can write this in polar form with modulus and radius
Hence angle = 60 degrees and
Since we have got 5 roots for z, we can write 60, 420, 780, etc. with periods of 360
Using Demoivre theorem we get 5th root would be
5th root of 2 multiplied by 1/5 th of 60, 420, 780,....
Out of these only 2nd option suits our answer
Hence answer is Option 2.