If `sqrt(5-12 i)+sqrt(-5-12 i)=z` , then principal value of `a rgz` can be `pi/4` b. `pi/4` c. `(3pi)/4` d. `-(3pi)/4`

The principal value of the amplitude of (1+i) is pi b.(pi)/(12) c.(pi)/(4) d.(3 pi)/(4)

If z=(-2)/(1+isqrt(3)) , then the value of "arg"(z) is a. pi b. pi/4 c. pi/3 d. (2pi)/3

If z=sqrt(3)-2+i, then principal value of argument z is (where i=sqrt(-1)-(5 pi)/(12)(2)(pi)/(12) (3) (7 pi)/(12) (4) (5 pi)/(12)

If a complex number z satisfies |2z+10+10i|<=5sqrt(3)-5, then the least principal argument of z is :(a)-(5 pi)/(6) (b) (11 pi)/(12)( c) -(3 pi)/(4)(d)-(2 pi)/(3)

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

If sin x+sqrt(3)cos x=sqrt(2) then general solution of x 2n pi+(pi)/(12) 2n pi-(pi)/(12) 2n pi+(5 pi)/(12) 2n pi-(5 pi)/(12)

What of the value of tan.(pi)/(8).tan.(pi)/(12).tan.(pi)/(4).tan.(3pi)/(8)tan.(5pi)/(12) ?

The value of int_0^pi1/(5+3cosx)dx is pi//2 b. pi//4 c. 0 d. pi//8

If cos A=4/(5), cosB=12/13 and (3pi)/2 < A, B < 2pi then find the value of cos(A+B)