Ts Eamcet
Complex Numbers
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ+1 / -02022
If $-i$ and $\alpha$ are the roots of the equation $i z^2-2(i+1) z+(2-i)=0, \tan \theta=\frac{-1}{2}$ and $\theta \in 4$ th quadrant, then $5^3 \cos 6 \theta=$
Ts Eamcet
TS EAMCET 2022 (Online) 19th July Evening Shift
If $-i$ and $\alpha$ are the roots of the equation $i z^2-2(i+1) z+(2-i)=0, \tan \theta=\frac{-1}{2}$ and $\theta \in 4$ th quadrant, then $5^3 \cos 6 \theta=$