(a) Express $\tan^{-1} Z$ into real and imaginary parts. (b) If $e^{i…
Previous year question for Engineering Mathematics-I.
Question
(a) Express $\tan^{-1} Z$ into real and imaginary parts.
(b) If $e^{i\theta} = \sinh(x + i y)$, show that $\sinh^4 x = \cos^3 \theta = \cos^4 y$.
- Year: 2018
- Subject: Engineering Mathematics-I
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