જો $x+iy = \frac{1+7i}{(2-i)^2}$ હોય,તો $\operatorname{cosec}\left(\tan^{-1} \frac{y}{x} - \frac{\pi}{4}\right) = $

  • A
    $1$
  • B
    $\infty$
  • C
    $-1$
  • D
    $0$

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Similar Questions

$\mathop {\lim }\limits_{x \to 1} \frac{{1 - \sqrt x }}{{{{({{\cos }^{ - 1}}x)}^2}}} = $

જો $y = \tan^{-1}\left(\frac{1}{1+x+x^2}\right) + \tan^{-1}\left(\frac{1}{x^2+3x+3}\right) + \tan^{-1}\left(\frac{1}{x^2+5x+7}\right)$ હોય,તો $y'(0)$ ની કિંમત શોધો.

ત્રિકોણમિતીય સમીકરણ $\tan ^{-1}\left(\frac{x-1}{x-2}\right)+\tan ^{-1}\left(\frac{x+1}{x+2}\right)=\frac{\pi}{4}$ નું સમાધાન કરતા $x$ ના શક્ય મૂલ્યો કયા છે?

જો $\tan ^{-1}(x+1)+\tan ^{-1} x+\tan ^{-1}(x-1)=\tan ^{-1} 3$ હોય,તો $x < 0$ માટે $500 x^4+270 x^2+997$ ની કિંમત શોધો.

$\lim _{n \rightarrow \infty} \sum_{r=1}^n \cot ^{-1}\left(r^2+\frac{3}{4}\right)=$

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