Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
Easyत्रिकोणमितीय फलन $\cot \left(-\frac{15 \pi}{4}\right)$ का मान ज्ञात कीजिए।
- A$1$
- B$-1$
- C$0$
- D$\sqrt{3}$
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$\sin^{2} 51^{\circ} + \sin^{2} 39^{\circ}$ का मान है
MediumKCET 2020
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View Solution$\left(\frac{\sin 35^{\circ}}{\cos 55^{\circ}}\right)^2+\left(\frac{\cos 55^{\circ}}{\sin 35^{\circ}}\right)^2-2 \cos 30^{\circ}=$
त्रिकोणमितीय फलन $\sin 765^{\circ}$ का मान ज्ञात कीजिए।
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View Solution$\cos 1^\circ \cdot \cos 2^\circ \cdot \cos 3^\circ \cdot \dots \cdot \cos 179^\circ = $
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