`(cos((5pi)/3)+i sin((5pi)/3))=?`

Two of the three value of (-1)^((1)/(3)) are cos((pi)/(3))+i sin((pi)/(3)) and cos((5 pi)/(3))+i sin((5 pi)/(3)) the third value is

(sin((5pi)/12)-cos((5pi)/12))/(cos((5pi)/12)+sin((5pi)/12))=

Convert the complex number 3(cos(5(pi)/(3))-i sin((pi)/(6))) into polar form.

sin((13pi)/3)sin((8pi)/3)+cos((2pi)/3)sin((5pi)/6)=1/2

If z=6(cos(2(pi)/(7))+i sin(2(pi)/(7))) and w=3(cos(5(pi)/(7))+i sin(5(pi)/(7))) then what is the value of (z)/(w)

z=(1-i)/(cos(pi/3)+i sin(pi/3))

sin((pi)/(3)+A).cos((pi)/(3)+B)-cos((pi)/(3)+A).sin((pi)/(3)+B)=...

The value of cos^(-1)(cos(5pi)/3)+sin^(-1)(sin(5pi)/3) is pi/2 (b) (5pi)/3 (c) (10pi)/3 (d) 0

Prove that: sin((3pi)/(8)-5)cos((pi)/(8)+5)+cos((3pi)/(8)-5)sin((pi)/(8)+7)=1

Prove that: 2cos pi/(13) cos (9pi)/(13) +cos (3pi)/(13) +cos (5pi)/(13)=0