Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesTrigonometrical ratios of sum and difference of two and three angles
Easy$\cos 15^\circ - \sin 15^\circ$ का मान किसके बराबर है?
- A$\frac{1}{\sqrt{2}}$
- B$\frac{1}{2}$
- C$-\frac{1}{\sqrt{2}}$
- D$0$
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Similar Questions
$\tan \frac{13 \pi}{12}$ का मान ज्ञात कीजिए।
Medium
View Solutionयदि $\cos (\alpha + \beta) = \frac{3}{5}$,$\sin (\alpha - \beta) = \frac{5}{13}$ और $0 < \alpha, \beta < \frac{\pi}{4}$ है,तो $\tan (2\alpha)$ का मान ज्ञात कीजिए।
DifficultJEE MAIN 2019
View Solution$\cos(36^{\circ}-A) \cos(36^{\circ}+A) + \cos(54^{\circ}+A) \cos(54^{\circ}-A) = $
यदि $\sin x + \sin y = \frac{1}{2}$ और $\cos x + \cos y = 1$ है,तो $\tan(x + y) = $
यदि $\tan A = \frac{5}{6}$ और $\tan B = \frac{1}{11}$ है,तो $A + B = $
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