Question

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

Answer 1

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