CBSE Class 9 Answered
the sum and difference of two angles of a triangle are 128 and 22 respectively. find all angles of triangle.
Asked by Kanhaiya | 07 Sep, 2015, 06:23: PM
Expert Answer
HI,
Let the three angles of a triangle be A, B and C.
Now, it is given that
A + B = 128 ....(1)
A - B = 22 ...(2)
Adding (1) and (2), we get
2A = 150
A = 75
Now, 75 + B = 128
B = 128 - 75 = 53
A + B + C = 180 ....(Angles of a triangle)
75 + 53 + C = 180
C = 180 - 75 - 53 = 52
Answered by | 07 Sep, 2015, 06:31: PM
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