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Question

In a triangle, the sum of two angles is 118 and their difference is 32; find each angle of the triangle.

A
75,43 and 62
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B
70,48 and 62
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C
85,43 and 52
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D
75,53 and 52
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Solution

The correct option is A 75,43 and 62
Let the angles of the triangle be a,b,c
We know, a+b+c=180o
Given, sum of two angles, a+b=118o...(I)
Difference between two angles, ab=32o...(II)
Adding I and II, we get
2a=150o
a=75
Put a=75o in equation I,
b=118o75o
b=43
Sum of the angles of a triangle = 180
a+b+c=180o
75o+43o+c=180o
c=180o118o
c=62

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