Question

2cos*3пи/2 - 1/2tg пи + sin пи/6

Answer 1

$2cosfrac{3pi}{2}-frac{1}{2}tgpi+sinfrac{pi}{6} = 0-frac{1}{2}*0+frac{1}{2} = frac{1}{2}$

Answer 2

2*cos270 - 1/2tg180 + sin 1/2 = 2 * 0 - 1/2 * 0 + 1/2 = 0 + 1/2 = 1/2