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Class 11
Maths :-NCERT Solutions - Complex Numbers And Quadratic Equations.

Page No 108:
Question 1:

Find the modulus and the argument of the complex number


Answer:

On squaring and adding, we obtain

Since both the values of sin θ and cos θ are negative and sinθ and cosθ are negative in III quadrant,

Thus, the modulus and argument of the complex number are 2 and respectively.


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NCERT Maths Class 11

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