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hba

  • 3 years ago

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  1. hba
    • 3 years ago
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    Modulus of \[2(\cos \frac{ \pi }{ 3},iSin \frac{ \pi }{ 3 })\]

  2. hba
    • 3 years ago
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    I suppose De-Moivres law Would help....

  3. hba
    • 3 years ago
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    @ash2326

  4. niksva
    • 3 years ago
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    express above in the form of complex number , that is, z = 2cos(pi/3) + i 2sin(pi/3) then take modulus of this u will get the required answer

  5. ash2326
    • 3 years ago
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    Modulus of \[a+ib \ is \sqrt{a^2+b^2}\] Use the same thing here, in fact modulus of \[\cos \theta+i\sin \theta =1\] regardless of theta.Can you do it now?

  6. hba
    • 3 years ago
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    So the answer is 2 ?

  7. ash2326
    • 3 years ago
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    Yes

  8. hba
    • 3 years ago
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    Thanks.

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