$\sin 47^\circ + \sin 61^\circ - \sin 11^\circ - \sin 25^\circ$ का मान ज्ञात कीजिए।

  • A
    $\sin 36^\circ $
  • B
    $\cos 36^\circ $
  • C
    $\sin 7^\circ $
  • D
    $\cos 7^\circ $

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मान ज्ञात कीजिए: $\cos^2 48^\circ - \sin^2 12^\circ$

यदि $\cos (A-B)=3/5$ और $\tan A \tan B=2$ है,तो निम्नलिखित में से कौन सा सत्य है?

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