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Question

Angles A , B and C of triangle ABC satisfy the relations angleB - angle A = 30 degrees and angleC - angle B = 45 degrees . Find all the angles

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Solution

If A, Band C are the angles of a triangle then, A+B+C=180 degreeHere B-A=30 degreeSo B=30 +A.....1C-B=45 degreeSo C=45+B=45+30+A=75+A........2Putting value of B, C in the original equation A+B+C=180 degree we get, A+30+A+75+A=1803A=180-105=75A=25 degreeHence B=30+25=55 degreeC=75+25=100 degree.

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