જો $\sin ^{2}(3 x+30^{\circ})+\cos ^{2}(2 x+45^{\circ})=1$ હોય,તો $x = \dots$ ($^{\circ}$ માં)

  • A
    $0$
  • B
    $15$
  • C
    $30$
  • D
    $60$

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Similar Questions

સાબિત કરો કે:
$(i)$ $\tan 48^{\circ} \tan 23^{\circ} \tan 42^{\circ} \tan 67^{\circ} = 1$
$(ii)$ $\cos 38^{\circ} \cos 52^{\circ} - \sin 38^{\circ} \sin 52^{\circ} = 0$

જો $\tan A = \cot B$ હોય,તો $A + B = \ldots$

જો $A+B+C=180^{\circ}$ હોય,તો $\tan \left(\frac{A+B}{2}\right)=$ ...........

$\cot \theta \cdot \tan \theta = \dots$

$\tan ^{2} \theta - \sec ^{2} \theta = \ldots \ldots \ldots$

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