किसी भी $\theta \in \left( \frac{\pi}{4}, \frac{\pi}{2} \right)$ के लिए,व्यंजक $3(\sin \theta - \cos \theta)^4 + 6(\sin \theta + \cos \theta)^2 + 4\sin^6 \theta$ का मान है

  • A
    $13 - 4\cos^2 \theta + 6\sin^2 \theta \cos^2 \theta$
  • B
    $13 - 4\cos^6 \theta$
  • C
    $13 - 4\cos^2 \theta + 6\cos^4 \theta$
  • D
    $13 - 4\cos^4 \theta + 2\sin^2 \theta \cos^2 \theta$

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Similar Questions

$2 \sin \left(\frac{\pi}{22}\right) \sin \left(\frac{3 \pi}{22}\right) \sin \left(\frac{5 \pi}{22}\right) \sin \left(\frac{7 \pi}{22}\right) \sin \left(\frac{9 \pi}{22}\right)$ का मान ज्ञात कीजिए।

$\sin 20^{\circ}(4+\sec 20^{\circ})=$

यदि $\cosh 2x = 199$ है,तो $\coth x$ का मान ज्ञात कीजिए।

यदि $\tan x = \frac{2b}{a - c}$ $(a \ne c)$,$y = a \cos^2 x + 2b \sin x \cos x + c \sin^2 x$ और $z = a \sin^2 x - 2b \sin x \cos x + c \cos^2 x$ है,तो:

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समीकरणों का निकाय: $2x \cos^2 \theta + y \sin 2\theta - 2 \sin \theta = 0$,$x \sin 2\theta + 2y \sin^2 \theta = -2 \cos \theta$,और $x \sin \theta - y \cos \theta = 0$,$\theta$ के सभी मानों के लिए,क्या कर सकता है:

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