જો $A + B = 225^\circ$ હોય,તો $\frac{{\cot A}}{{1 + \cot A}} \cdot \frac{{\cot B}}{{1 + \cot B}} = $

  • A
    $1$
  • B
    $-1$
  • C
    $0$
  • D
    $1/2$

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જો કાટકોણ ત્રિકોણની બાજુઓ $\{\cos2\alpha + \cos2\beta + 2\cos(\alpha + \beta )\}$ અને $\{\sin2\alpha + \sin2\beta + 2\sin(\alpha + \beta )\}$ હોય,તો કર્ણની લંબાઈ કેટલી થાય?

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$\tan 100^{\circ} + \tan 125^{\circ} + \tan 100^{\circ} \tan 125^{\circ}$ નું મૂલ્ય શું છે?

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