Class 12Mathematics3 and 4 .Determinants and MatricesExpansion of determinants, Solution of equation in the form of determinants and area of triangle and Equation of Line
Mediumसमीकरण $\left| \begin{array}{ccc} \cos \theta & \sin \theta & \cos \theta \\ -\sin \theta & \cos \theta & \sin \theta \\ -\cos \theta & -\sin \theta & \cos \theta \end{array} \right| = 0$ 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 घन समीकरण $\left| \begin{array}{ccc} 0 & a-x & b-x \\ -a-x & 0 & c-x \\ -b-x & -c-x & 0 \end{array} \right| = 0$ में $x$ का एक पुनरावृत्त मूल (repeated root) है,तो:
यदि $A = \begin{bmatrix} x & 2 & 1 \\ 2 & x & 1 \\ 2 & 1 & 0 \end{bmatrix}$ और $\det(A^3) = 125$ है,तो $x =$
$\begin{vmatrix} b+c & a & a \\ b & c+a & b \\ c & c & a+b \end{vmatrix}$ का मान ज्ञात कीजिए।
सारणिक का मान ज्ञात कीजिए: $\left|\begin{array}{cc}2 & 4 \\ -5 & -1\end{array}\right|$
Easy
View Solution$t$ के उन वास्तविक मानों की संख्या ज्ञात कीजिए जिनके लिए समघाती समीकरण निकाय
$\begin{aligned}
t x+(t+1) y+(t-1) z &=0 \\
(t+1) x+t y+(t+2) z &=0 \\
(t-1) x+(t+2) y+t z &=0
\end{aligned}$
के अशून्य (non-trivial) हल हैं।
$\begin{aligned}
t x+(t+1) y+(t-1) z &=0 \\
(t+1) x+t y+(t+2) z &=0 \\
(t-1) x+(t+2) y+t z &=0
\end{aligned}$
के अशून्य (non-trivial) हल हैं।
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