$(a \cos \theta, b \sin \theta)$,$(-a \sin \theta, b \cos \theta)$ અને $(-a \cos \theta, -b \sin \theta)$ શિરોબિંદુઓ ધરાવતા ત્રિકોણનું ક્ષેત્રફળ શોધો.

  • A
    $ab \sin \theta \cos \theta$
  • B
    $a \cos \theta \sin \theta$
  • C
    $\frac{1}{2} ab$
  • D
    $ab$

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Similar Questions

સમીકરણ $\left|\begin{array}{ccc}x+a & x & x \\ x & x+a & x \\ x & x & x+a\end{array}\right|=0$ ઉકેલો,જ્યાં $a \neq 0$.

જો $x^2+y^2+z^2 \neq 0, \quad x=cy+bz, \quad y=az+cx$ અને $z=bx+ay$ હોય, તો $a^2+b^2+c^2+2abc$ ની કિંમત શોધો.

કોઈપણ $a, b, c \in R$ માટે,નિશ્ચાયક $\left|\begin{array}{lll}bc & b+c & 1 \\ ca & c+a & 1 \\ ab & a+b & 1\end{array}\right|$ ની કિંમત શું થાય?

સમીકરણ $\left| \begin{matrix} x & a & b \\ a & x & a \\ b & b & x \end{matrix} \right| = 0$ ના ઉકેલ(ઓ) છે:

જો $\left| \begin{array}{ccc} x+1 & 1 & 1 \\ 2 & x+2 & 2 \\ 3 & 3 & x+3 \end{array} \right| = 0$ હોય,તો $x = \dots$

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