${\tan ^2}\theta + {\cot ^2}\theta$ ની કિંમત શું છે?

  • A
    $\ge 2$
  • B
    $\le 2$
  • C
    $\ge -2$
  • D
    આમાંથી કોઈ નહીં

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$\tan^{-1} \left( \frac{\sin 2 - 1}{\cos 2} \right)$ નું મૂલ્ય કેટલું થાય?

$\frac{\cos 9^\circ + \sin 9^\circ}{\cos 9^\circ - \sin 9^\circ} = $

જો $\frac{\cos^4 \alpha}{\cos^2 \beta} + \frac{\sin^4 \alpha}{\sin^2 \beta} = 1$ હોય,તો $\left[ \frac{\cos^4 \beta}{\cos^2 \alpha} + \frac{\sin^4 \beta}{\sin^2 \alpha} \right]$ ની કિંમત શોધો (જ્યાં $[.]$ એ મહત્તમ પૂર્ણાંક વિધેય દર્શાવે છે).

$\sin 600^\circ \cos 330^\circ + \cos 120^\circ \sin 150^\circ$ ની કિંમત શોધો.

જો $a \sin^2 x + b \cos^2 x = c$,$b \sin^2 y + a \cos^2 y = d$ અને $a \tan x = b \tan y$ હોય,તો $\frac{a^2}{b^2}$ ની કિંમત શોધો.

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