Difficult
If $z = i \log (2 - \sqrt{3}),$ then $\cos z = $
- A$i$
- B$2i$
- C$1$
- D$2$
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Let $z = i^{2i}$,then $|z|$ is (where $i = \sqrt{-1}$)
The value of $\sqrt{12 - \sqrt{68 + 48\sqrt{2}}}$ is:
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View Solution$\sinh^{-1}(2) + \cosh^{-1}(2) - \tanh^{-1}\left(\frac{2}{3}\right) + \coth^{-1}(-2) = $
If $\sqrt{a + ib} = x + iy$,then the possible value of $\sqrt{a - ib}$ is
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View SolutionThe real part of $(1 - i)^{-i}$ is
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