Question

5sin pi/6 + 3tg pi/4 - cos pi/4 - 10tg pi/4

Answer 1

$=5*\frac{1}{2} +3*1-\frac{\sqrt{2} }{2}-10*1=\frac{5}{2} +3-10-\frac{\sqrt{2} }{2} =-4,5-\frac{\sqrt{2} }{2}$