`-2(cos(pi/3)+isin(pi/3))=?`

cos(pi/4)+isin(-pi/4)=?

(cos(pi/6)+isin(pi/6))^7=?

z=cos(pi/6)+isin(pi/6)=?

cos((2pi)/3)-sin((2pi)/3)=?

Convert z=(i-1)/("cos"(pi)/(3)+"isin"(pi)/(3)) in polar form.

Circumcentre of DeltaABC (h,k) ,where co-ordinates of A=(2+cos(pi/3),3+sin(pi/3)) , B=(2+cos pi,3+sin pi) and C=(2+cos(4 pi/3),3+sin(4 pi/3)) , then the value of h^(2)+k^(2)=

The polar form of the complex number (i^(25))^3 is (a) cos(pi/2)+isin(pi/2) (b) cospi+isinpi (c) cospi-isinpi (d) cos((3pi)/2)+isin((3pi)/2)

cos((3pi)/4)-isin((3pi)/4)=?

If a=cos((4pi)/3)+isin((4pi)/3) then |(1,1,1),(1,a,a^2),(1,a^2,a)|

z=5(cos((7pi)/6)+isin((7pi)/6))=?