$\alpha \in R$ માટે $(\cos \alpha, \sin \alpha)$ અને $(\cos (\pi+\alpha), \sin (\pi+\alpha))$ બિંદુઓ કઈ દિશા ધરાવે છે?

  • A
    સમાન
  • B
    વિરુદ્ધ
  • C
    અલગ
  • D
    $(1,0)$ જેવી જ

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$\sin 120^{\circ} \cos 150^{\circ} - \cos 240^{\circ} \sin 330^{\circ}$ ની કિંમત શોધો :

$\cos (270^\circ + \theta )\cos (90^\circ - \theta ) - \sin (270^\circ - \theta )\cos \theta $ નું મૂલ્ય શોધો.

જો $y = \log_e \tan \left(\frac{\pi}{4} + \frac{x}{2}\right)$ હોય,તો $\tanh \left(\frac{y}{2}\right) = $

જો $A, B, C, D$ એ ચક્રીય ચતુષ્કોણના ક્રમમાં લીધેલા ખૂણાઓ હોય,તો $\cos(180^{\circ} + A) + \cos(180^{\circ} - B) + \cos(180^{\circ} - C) - \sin(90^{\circ} - D) =$

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જો $A = \sin 45^{\circ} + \cos 45^{\circ}$ અને $B = \sin 44^{\circ} + \cos 44^{\circ}$ હોય,તો

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