Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMix Examples-Trigonometrical Ratios, Functions and Identities
Mediumજો $\frac{\sin (A+B)}{\sin (A-B)}=\frac{\cos (C+D)}{\cos (C-D)}$ હોય,તો $\tan A \cot B=$
- A$\cot C \cot D$
- B$-\tan C \tan D$
- C$\tan C \tan D$
- D$-\cot C \cot D$
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Similar Questions
જો $\cos \alpha + \cos \beta + \cos \gamma = 0$ અને $\sin \alpha + \sin \beta + \sin \gamma = 0$ હોય,તો $\cos 2\alpha + \cos 2\beta + \cos 2\gamma$ ની કિંમત શોધો.
Difficult
View Solution$\sin 12^\circ \sin 48^\circ \sin 54^\circ = $
$\frac{1}{\sin 1^{\circ} \sin 2^{\circ}}+\frac{1}{\sin 2^{\circ} \sin 3^{\circ}}+\frac{1}{\sin 3^{\circ} \sin 4^{\circ}}+\ldots+\frac{1}{\sin 89^{\circ} \sin 90^{\circ}} = ?$
$\sin ^4 \frac{\pi}{8}+\cos ^4 \frac{\pi}{8}+\sin ^4 \frac{3 \pi}{8}+\cos ^4 \frac{3 \pi}{8}+\sin ^4 \frac{5 \pi}{8}+\cos ^4 \frac{5 \pi}{8}+\sin ^4 \frac{7 \pi}{8}+\cos ^4 \frac{7 \pi}{8}=$
જો $A$ ત્રીજા ચરણમાં હોય અને $\tan A = \frac{\sqrt{7}}{3}$ હોય,તો $18 - 16 \sin^2 \frac{A}{2} - 32 \sin \frac{A}{2} \sin \frac{5A}{2} = $
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