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NDA2011MathematicsTrigonometric Ratios & IdentitiesActual

What is the value of 15^ 195^ ?

Options

  1. A7-4 3
  2. B7+4 3
  3. C7+2 3
  4. D7+6 3

Correct answer

A. 7-4 3

Step-by-step solution

aligned & 15^ 195^ & = 15^ (180+15^ ) & = 15^ 15^ & =(2- 3 )(2- 3 ) & =4-2 3 -2 3 +3 . & =7-4 3 . aligned

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