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NDA2014MathematicsTrigonometric Ratios & IdentitiesActual

What is 1+ 2 equal to?

Options

  1. A-
  2. B+
  3. C2 +
  4. D+2

Correct answer

B. +

Step-by-step solution

aligned 1+ 2 & = ^2 + ^2 +2 & = ( + )^2 & = + & = + aligned

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