Ts Eamcet
Complex Numbers
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ+1 / -02024
If $\sqrt{5}-i \sqrt{15} \doteqdot r(\cos \theta+i \sin \theta),-\pi<\theta<\pi$, then $r^2\left(\sec \theta+3 \operatorname{cosec}^2 \theta\right)=$
Ts Eamcet
TG EAPCET 2024 (Online) 9th May Morning Shift
If $\sqrt{5}-i \sqrt{15} \doteqdot r(\cos \theta+i \sin \theta),-\pi<\theta<\pi$, then $r^2\left(\sec \theta+3 \operatorname{cosec}^2 \theta\right)=$