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IIT JEE Entrance Exam

Three angles of a triangle ABC are in Arithmetic progression and two sides are in the ratio b : c = √3 : √2. Find angle A.

Profile image of pramit
11 Years agoGrade
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1 Answer

Profile image of Sourabh Singh
11 Years ago
Hii




use property of AP and then use the formulae of cosine from solution of triangles to get the answer in the required format.

[a^2 = b^2 + c^2 - 2bc\cos\alpha\,]




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