समीकरण $\left| \begin{array}{ccc} \cos \theta & \sin \theta & \cos \theta \\ -\sin \theta & \cos \theta & \sin \theta \\ -\cos \theta & -\sin \theta & \cos \theta \end{array} \right| = 0$ का हल क्या है?

  • A
    $\theta = n\pi$
  • B
    $\theta = 2n\pi \pm \frac{\pi}{2}$
  • C
    $\theta = n\pi \pm (-1)^n \frac{\pi}{4}$
  • D
    $\theta = 2n\pi \pm \frac{\pi}{4}$

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Similar Questions

यदि $2\left|\begin{array}{ll}\sin ( A + B ) & \cos ( A + B ) \\ \cos ( A - B ) & \sin ( A - B )\end{array}\right|+\sqrt{3}= 0$ है,तो $A =$ . . . . . . .

यदि $\omega \neq 1$ इकाई का घनमूल है, तो सारणिक $\left|\begin{array}{ccc}\omega+\omega^2 & \omega^2+\omega^9 & \omega^9+\omega \\ \omega^{27}+\omega^{31} & \omega^{31}+\omega^{17} & \omega^{17}+\omega^{27} \\ \omega^{30}+\omega^{41} & \omega^{41}+\omega^{19} & \omega^{19}+\omega^{30}\end{array}\right|$ का मान ज्ञात कीजिए।

$\left| {\begin{array}{*{20}{c}}a&b&c\\b&c&a\\c&a&b\end{array}} \right| = $

यदि ${\Delta _1} = \left| {\begin{array}{*{20}{c}}1&0\\a&b\end{array}} \right|$ और ${\Delta _2} = \left| {\begin{array}{*{20}{c}}1&0\\c&d\end{array}} \right|$ है,तो ${\Delta _2}{\Delta _1}$ का मान ज्ञात कीजिए।

$\theta$ के मानों का एक समुच्चय जिसके लिए समीकरण निकाय $(\sin 3 \theta) x-y+z=0$,$(\cos 2 \theta) x+4 y+3 z=0, 2 x+7 y+7 z=0$ के गैर-तुच्छ (non-trivial) हल हैं,वह है

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