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MHT CET202016 Oct 2020Evening ShiftMathematicsProperties of TrianglesActual

In a ABC if 2 C = Sin B . CosecA, then

Options

  1. Aa=b
  2. Bb = c
  3. Ca = c
  4. Da=b=c

Correct answer

C. a = c

Step-by-step solution

(D) We know B A = b a and C= a²+b²-c² 2 a b Given, 2 C= B cosec A 2 C= B A 2 (a²+b²-c² ) 2 a b = b a a²+b²-c²=b² a²=c² a=c

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