C-09-Q136mediumsingle_mcqtan45∘=?\tan 45^\circ = ?tan45∘=?a000b111c3\sqrt{3}3d13\dfrac{1}{\sqrt{3}}31ব্যাখ্যাSince the opposite and adjacent sides are equal at 45∘45^\circ45∘, tan45∘=sin45∘cos45∘=1/21/2=1\tan 45^\circ = \dfrac{\sin 45^\circ}{\cos 45^\circ} = \dfrac{1/\sqrt{2}}{1/\sqrt{2}} = 1tan45∘=cos45∘sin45∘=1/21/2=1.