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

  • A
    $\frac{\pi}{6}$
  • B
    $\frac{\pi}{12}$
  • C
    $\frac{\pi}{3}$
  • D
    $\frac{\pi}{4}$

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Similar Questions

$\left|\begin{array}{ccc}x+2 & x+3 & x+5 \\ x+4 & x+6 & x+9 \\ x+8 & x+11 & x+15\end{array}\right|$ ની કિંમત શોધો.

નિશ્ચાયક $\Delta = \begin{vmatrix} 1 & 2 & 4 \\ -1 & 3 & 0 \\ 4 & 1 & 0 \end{vmatrix}$ ની કિંમત શોધો.

$ \left|\begin{array}{ccc} 3x+1 & 2x-1 & x+2 \\ 5x-1 & 3x+2 & x+1 \\ 7x-2 & 3x+1 & 4x-1 \end{array}\right| $ ના વિસ્તરણમાં અચળ પદ શોધો.

જો $\left|\begin{array}{ccc}2 & 2k & 1 \\ 1 & k-1 & 1 \\ 2 & 1 & k+1\end{array}\right|=Ak^2+Bk+C$ હોય, તો $A+B+C=$

જો $a, b, c$ એ $A.P.$ માં હોય,તો $\left| \begin{array}{ccc} x+2 & x+3 & x+a \\ x+4 & x+5 & x+b \\ x+6 & x+7 & x+c \end{array} \right|$ નું મૂલ્ય શું થાય?

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