જો cos^{-1} x = alpha (0

Question

(B) આપેલ સમીકરણ $\sin^{-1} (2 x \sqrt{1 - x^2}) + \sec^{-1} (\frac{1}{2 x^2 - 1}) = \frac{2 \pi}{3}$ છે.$\cos^{-1} x = \alpha$ હોવાથી,$x = \cos \alpha

Vedclass · Accepted Answer

$\frac{\pi}{6}$

Vedclass · Answer

(B) આપેલ સમીકરણ $\sin^{-1} (2 x \sqrt{1 - x^2}) + \sec^{-1} (\frac{1}{2 x^2 - 1}) = \frac{2 \pi}{3}$ છે.$\cos^{-1} x = \alpha$ હોવાથી,$x = \cos \alpha$ મળે. આપેલ છે કે $0 સમીકરણમાં $x = \cos \alpha$ મૂકતા:$\sin^{-1} (2 \cos \alpha \sqrt{1 - \cos^2 \alpha}) + \sec^{-1} (\frac{1}{2 \cos^2 \alpha - 1}) = \frac{2 \pi}{3}$$\sin^{-1} (2 \cos \alpha \sin \alpha) + \sec^{-1} (\frac{1}{\cos 2 \alpha}) = \frac{2 \pi}{3}$$\sin^{-1} (\sin 2 \alpha) + \cos^{-1} (\cos 2 \alpha) = \frac{2 \pi}{3}$અહીં $0 આમ,$2 \alpha + 2 \alpha = \frac{2 \pi}{3}$$4 \alpha = \frac{2 \pi}{3}$$\alpha = \frac{\pi}{6}$.

જો $\cos^{-1} x = \alpha$ $(0 < x < 1)$ અને $\sin^{-1} (2 x \sqrt{1 - x^2}) + \sec^{-1} (\frac{1}{2 x^2 - 1}) = \frac{2 \pi}{3}$ હોય,તો $\alpha$ ની કિંમત શોધો.

Similar Questions

$\sin ^{-1}\left(\cos \frac{\pi}{13}\right)+\cos ^{-1}\left(\sin \frac{\pi}{13}\right) = $ . . . . . . .

જો $3 \cos ^{-1} x + \sin ^{-1} x = \pi$ હોય,તો $x = $ . . . . . . .

સાબિત કરો કે $\tan ^{-1}\left(\frac{\sqrt{1+x}-\sqrt{1-x}}{\sqrt{1+x}+\sqrt{1-x}}\right)=\frac{\pi}{4}-\frac{1}{2} \cos ^{-1} x$,જ્યાં $-\frac{1}{\sqrt{2}} \leq x \leq 1$.

કિંમત શોધો: $\sin^{-1}(12/13) + \cos^{-1}(4/5) + \tan^{-1}(63/16) = $

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