Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMix Examples-Trigonometrical Ratios, Functions and Identities
Difficultयदि $x \cos \theta = y \cos \left( \theta + \frac{2\pi}{3} \right) = z \cos \left( \theta + \frac{4\pi}{3} \right)$ है,तो $\frac{1}{x} + \frac{1}{y} + \frac{1}{z}$ का मान किसके बराबर है?
- A$1$
- B$2$
- C$0$
- D$3 \cos \theta$
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Similar Questions
यदि $A = \{x \in [0, 2\pi] : \tan x - \tan^2 x > 0\}$ और $B = \{x \in [0, 2\pi] : |\sin x| < \frac{1}{2}\}$,है,तो $A \cap B =$
$\tan 81^{\circ}-\tan 63^{\circ}-\tan 27^{\circ}+\tan 9^{\circ}$ का मान ज्ञात कीजिए।
DifficultAP EAMCET 2014
View Solution$ABC$ एक ऐसा त्रिभुज है कि $\sin(2A + B) = \sin(C - A) = -\sin(B + 2C) = \frac{1}{2}$ है। यदि $A, B,$ और $C$ $A.P.$ में हैं,तो $A, B,$ और $C$ हैं:
Easy
View Solution$\sum_{k=1}^3 \cos ^2\left((2 k-1) \frac{\pi}{12}\right)$ का मान ज्ञात कीजिए।
DifficultTS EAMCET 2002
View Solutionयदि $\sin x - \sin y = \frac{27}{65}$ और $\cos x - \cos y = -\frac{21}{65}$ है,तो $\sin(x + y)$ का मान ज्ञात कीजिए।
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