Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
Easy$\sin 690^{\circ} \times \sec 240^{\circ} = $
- A$1$
- B$-1$
- C$\frac{-1}{2}$
- D$\frac{1}{2}$
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$\frac{\sin 70^{\circ}+\cos 40^{\circ}}{\cos 70^{\circ}+\sin 40^{\circ}}$ का मान ज्ञात कीजिए।
जब $A = \frac{5\pi}{4}$ हो,तो $\cos A - \sin A$ का मान क्या होगा?
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View Solution$\sin \left(\frac{5 \pi}{3}\right) + \sec \left(\frac{13 \pi}{3}\right) = $
सिद्ध कीजिए कि $3 \sin \frac{\pi}{6} \sec \frac{\pi}{3} - 4 \sin \frac{5 \pi}{6} \cot \frac{\pi}{4} = 1$.
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View Solution$\cot (45^\circ + \theta ) \cot (45^\circ - \theta ) = $
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