જો $\sec 4A = \operatorname{cosec}(A - 20^\circ)$ હોય,જ્યાં $4A$ એ લઘુકોણનું માપ છે,તો $A$ ની કિંમત $\ldots \ldots \ldots \ldots$ છે. ($^\circ$ માં)

  • A
    $45$
  • B
    $70$
  • C
    $30$
  • D
    $22$

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Similar Questions

જો $\tan \theta = \frac{4}{3}$ હોય,તો $\frac{5 \sin \theta + 2 \cos \theta}{3 \sin \theta - \cos \theta} = \ldots \ldots$

$(\sin 80^{\circ} + \cos 10^{\circ})(\sin 80^{\circ} - \cos 10^{\circ}) = \ldots \ldots \ldots$

$\sin 60^{\circ} \sin 45^{\circ} + \cos 60^{\circ} \cos 45^{\circ} = \ldots \ldots \ldots \ldots$

$\tan 5^{\circ} \cdot \tan 25^{\circ} \cdot \tan 45^{\circ} \cdot \tan 65^{\circ} \cdot \tan 85^{\circ}$ ની કિંમત $\ldots \ldots \ldots \ldots$ છે.

સાબિત કરો કે,
$(\sqrt{3}+ 1) (3-\cot 30^{\circ})=\tan ^{3} 60^{\circ}-2 \sin 60^{\circ}$

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