Question

express 2/1+i in polar form
​

Answer 1

Answer:

z=−1+

2

1

r=

1+(

2

1

)

2

=

1+

2

1

=

2

3

a=rcosθb=rsinθ

−1=

2

3

cosθ

2

1

=

2

3

sinθ

θ=cos

−1

(

3

2

)θ=sin

−1

(

3

1

)

∴z=r(cosθ+sinθ)=

2

3

(

3

2

+1(

3

1

))

z=

2

3

(

3

2

+1(

3

1

))

Step-by-step explanation:

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Answer 2

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