Find Principal Argument of the complex no. `sin((6pi)/5)+i(1+cos((6pi)/5))`

Find the principal argument of the complex number sin(6 pi)/(5)+i(1+cos(6 pi)/(5))

The argument of the complex number sin6(pi)/(5)+i(1+cos6(pi)/(5)) is

Write the modulus and principal arguments of the complex no.z=4(cos((pi)/(4))+i sin((pi)/(4)))

Find the modulus,argument,and the principal argument of the complex numbers.(i-1)/(i(1-cos((2 pi)/(5)))+(sin(2 pi))/(5))

Find the amplitude of sin(pi)/(5)+i(1-cos(pi)/(5))

Find the modulus,argument,and the principal argument of the complex numbers.(i) (tan1-i)^(2)

Find the modulus,argument and the principal argument of the complex numbers: a z=1+cos((10 pi)/(9))+i sin((10 pi)/(9))(b)z=-2(cos30^(@)+i sin30^(@))

Find the modulus and principal argument of the following complex number: (5)/(2)(cos30^(@)+i sin30^(@))

FInd sin(pi/10). cos(pi/5)