Ts Eamcet
Complex Numbers
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ+1 / -02022
If $e^{i t}=\cos t+i \sin t$ and $e^{-i t}=\cos t-i \sin t$, then $\cosh (x+i y)-\cosh (x-i y)=$
Ts Eamcet
TS EAMCET 2022 (Online) 19th July Evening Shift
If $e^{i t}=\cos t+i \sin t$ and $e^{-i t}=\cos t-i \sin t$, then $\cosh (x+i y)-\cosh (x-i y)=$