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COMEDK2018MathematicsComplex Number

The argument of the complex number ( 6 5 )+i (1+ 6 5 ) is

Options

  1. A10
  2. B5 6
  3. C- 10
  4. D2 5

Correct answer

C. - 10

Step-by-step solution

Let z= ( 6 5 )+i (1+ 6 5 ) Putting 6 5 =r and 1+ 6 5 =r On dividing Eq. (ii) by Eq. (i), we get gathered = 1+ 6 5 ( 6 5 ) = 2 ² 3 5 2 3 5 3 5 = 3 5 = ( 2 - 3 5 ) = (- 10 ) gathered

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