Q. 25.0( 4 Votes )
In a ΔABC, if ∠A – ∠B = 40° and ∠B – ∠C = 10°, find the measure of ∠A, ∠B and ∠C.
Answer :
A = B + 40
C = B – 10
A + B + C = 180
B + 40 + B + B – 10 = 180
3B + 30 = 180
3B = 180 – 30 = 150
B = 50O
So, A = B + 40 = 90O
C = B – 10 = 40O
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