## hba 3 years ago Question..........

1. hba

Modulus of $2(\cos \frac{ \pi }{ 3},iSin \frac{ \pi }{ 3 })$

2. hba

I suppose De-Moivres law Would help....

3. hba

@ash2326

4. anonymous

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

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

So the answer is 2 ?

7. ash2326

Yes

8. hba

Thanks.