operatorname{cosec} 15^{circ} + sec 15^{circ} | vedclass

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Question

(C) $\operatorname{cosec} 15^{\circ} + \sec 15^{\circ} = \frac{1}{\sin 15^{\circ}} + \frac{1}{\cos 15^{\circ}}$$= \frac{\cos 15^{\circ} + \sin 15^{\ci

Vedclass · Accepted Answer

$2 \sqrt{6}$

Vedclass · Answer

(C) $\operatorname{cosec} 15^{\circ} + \sec 15^{\circ} = \frac{1}{\sin 15^{\circ}} + \frac{1}{\cos 15^{\circ}}$$= \frac{\cos 15^{\circ} + \sin 15^{\circ}}{\sin 15^{\circ} \cos 15^{\circ}}$अंश और हर को $2$ से गुणा करने पर:$= \frac{2(\cos 15^{\circ} + \sin 15^{\circ})}{2 \sin 15^{\circ} \cos 15^{\circ}} = \frac{2(\cos 15^{\circ} + \sin 15^{\circ})}{\sin 30^{\circ}}$चूंकि $\sin 30^{\circ} = \frac{1}{2}$,इसलिए:$= 4(\cos 15^{\circ} + \sin 15^{\circ})$$\sin 15^{\circ} = \frac{\sqrt{6} - \sqrt{2}}{4}$ और $\cos 15^{\circ} = \frac{\sqrt{6} + \sqrt{2}}{4}$ का उपयोग करने पर:$= 4 \left( \frac{\sqrt{6} + \sqrt{2}}{4} + \frac{\sqrt{6} - \sqrt{2}}{4} \right)$$= 4 \left( \frac{2\sqrt{6}}{4} \right) = 2\sqrt{6}$

$\operatorname{cosec} 15^{\circ} + \sec 15^{\circ}$ का मान ज्ञात कीजिए:

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