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13. Complex Numbers
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Q1 of 153 Page 14

Find the modulus and argument of the following complex numbers and hence express each of them in the polar form :

1 + i

Given complex number is Z=1+i


We know that the polar form of a complex number Z=x+iy is given by Z=|Z|(cosθ+isinθ)


Where,


|Z|=modulus of complex number=


θ =arg(z)=argument of complex number=


Now for the given problem,


⇒


⇒


⇒


⇒


Since x>0,y>0 complex number lies in 1st quadrant and the value of θ will be as follows 00≤θ≤900.


⇒


⇒ .


⇒


∴ The Polar form of Z=1+i is .


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Questions · 153
13. Complex Numbers
1 2 3 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 3 3 3 3 3 3 4 4 4 4 5 6 7 8 9 10 11 12 13 14 15 16 16 16 16 16 17 18 19 20 21 22 23 24 25 26 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 3 3 3 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
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