$2 \cos ^{-1} x = \sin ^{-1} \left( 2 x \sqrt{1 - x^2} \right)$ એ $x$ ની કઈ કિંમતો માટે સાચું છે?

  • A
    $-1 \leq x \leq 1$
  • B
    $0 \leq x \leq 1$
  • C
    $\frac{1}{\sqrt{2}} \leq x \leq 1$
  • D
    $0 \leq x \leq \frac{1}{\sqrt{2}}$

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Similar Questions

સાબિત કરો કે $\tan ^{-1} \frac{63}{16}=\sin ^{-1} \frac{5}{13}+\cos ^{-1} \frac{3}{5}$

જો $a > b > 0$ અને $\sec^{-1} \left( \frac{a+b}{a-b} \right) = 2 \sin^{-1} x$ હોય,તો $x$ ની કિંમત શોધો.

$\tan ^{-1}\left(\frac{1}{3}\right)+\tan ^{-1}\left(\frac{1}{5}\right)+\tan ^{-1}\left(\frac{1}{7}\right)+\tan ^{-1}\left(\frac{1}{8}\right)$ નું મૂલ્ય શોધો.

જો $x, y, z$ એ $A.P.$ માં હોય અને $\tan ^{-1} x, \tan ^{-1} y, \tan ^{-1} z$ પણ $A.P.$ માં હોય,તો

જો $\sin ^{-1} \frac{x}{5}+\sin ^{-1} \frac{4}{5}=\frac{\pi}{2}$ હોય,તો $x=$ . . . . . . .

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