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NDA2019MathematicsTrigonometric Ratios & IdentitiesActual

What is the value of 34^ 236^ - 56^ 124^ 28^ 88^ + 178^ 208^ ?

Options

  1. A-2
  2. B-1
  3. C2
  4. D1

Correct answer

A. -2

Step-by-step solution

34^ 236^ - 56^ 124^ 28^ 88^ + 178^ 208^ aligned & = 34^ (- 56^ )- 56^ 34^ 28^ 2^ + 2^ 28^ & = - 34^ 56^ - 56^ 34^ (28^ +2^ ) aligned =- (34^ +56^ ) 30^ = - 90^ 30^ = -1 1 2 =-2

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