Question

Determine










Cotangente 30 graus

Answer 1

cotg'30°=inverso de tg'30°
$\cot(30) = inv \sqrt{3} \div 3 \\ \cot(30) = 3 \div \sqrt{3} \\ \cot(30) = 3 \times \sqrt{3} \div \sqrt{3} \times \sqrt{3} \\ \cot(30) = 3 \sqrt{3} \div \sqrt{9} \\ \cot(30) = 3 \sqrt{3} \div 3 \\ \cot(30) = \sqrt{3}$