SubArea: Sine, cosine, tangent and cotangentLevel: BProject ID: 1003076508Accepted: 1Clonable: 0Easy: 1For which \( \alpha\in[0;90^{\circ} ] \) is \( \mathrm{tg}\,\alpha = \mathrm{cotg}\,\alpha \)?\( 45^{\circ} \)\( 60^{\circ} \)\( 35^{\circ} \)\( 30^{\circ} \)
