Maths-
General
Easy

Question

If x over y equals fraction numerator cos begin display style space end style A over denominator cos begin display style space end style B end fraction then fraction numerator x tan space A plus y tan space B over denominator x plus y end fraction=

  1. tan space fraction numerator A plus B over denominator 2 end fraction
  2. tan space fraction numerator A minus B over denominator 2 end fraction
  3. cot space fraction numerator A plus B over denominator 2 end fraction
  4. cot space fraction numerator A minus B over denominator 2 end fraction

The correct answer is: tan space fraction numerator A plus B over denominator 2 end fraction

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