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Q.

What is the complement of the angle 77 ° ?


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a

16 °

b

13 °

c

14 °

d

113 °  

answer is B.

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Detailed Solution

The given angle is 77 ° .
We say that two angles complement one another when their combined angle is 90 ° .
Let A be the complement of the angle 77 ° .
∴A+ 77 ° = 90 ° ⇒ A = 13 ° Therefore, the complement of the angle 77 ° is 13 ° . Hence, option (2) is correct.
 
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