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MHT CET202211 Aug 2022Morning ShiftMathematicsTrigonometric Ratios & IdentitiesActual

In a triangle A B C with usual notations, If a: b: c=7: 8: 9 : then A: B: C=

Options

  1. A14:11:6
  2. B7:8:9
  3. C3:4:5
  4. D5:6:7

Correct answer

A. 14:11:6

Step-by-step solution

Let a=7 k, b=8 k, c=9 k Using cosine rule A= 2 3 , B= 11 21 , C= 2 7 Rightarrow A: B: C=14: 11: 6

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