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Q.

How many degrees are there in:


1) One right angle


2) Two right angle


3) Three right angle


4) Four right angle


5)  23 right angle


6)  112 right angle


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a

90°,270°,180°,360°,60°,135°

b

 90°,180°,360°,360°,60°,135°

c

 90°,180°,270°,360°,60°,135°

d

 90°,180°,520°,360°,60°,135° 

answer is C.

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Detailed Solution

Concept- Angles are measured in degrees. There are 360 degrees in a circle. A right angle, for instance, is 90 degrees. Ninety degrees would be expressed as 90° since the sign for a degree is °. The radian is yet another angle measurement unit.
One right angle is equal to  90°, Using the unitary method to calculate the degree.
Given is that one right angle =90°
1) One right angle = 90°
2) Two right angles = 90°×2=180°
3) Three right angles =90°×3=270°
4) Four right angles  =90°×4=360°
5)   23Right angle= 90°×23=60° 
6)   112Right angle=90°×112=135°
Hence, the correct option is 3)  90°,180°,270°,360°,60°,135°.
 
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