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MHT CET202019 Oct 2020Evening ShiftMathematicsProperties of TrianglesActual

With usual notations, if the angles A, B, C of a A B C are in A.P. and b: c= 3 : 2 , then A =

Options

  1. A55^
  2. B45^
  3. C35^
  4. D75^

Correct answer

D. 75^

Step-by-step solution

(B) Since A, B, C are in A.P., 2 B=A+C B=60^ We know that, B b = C c C= C b 60^ C= 2 3 3 2 = 1 2 C=45^ A=180^ - (60^ +45^ )=75^

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