Question

sin П+sin 1,5П;sin(-5)-cosП

Answer 1

$sinpi +sin1,5pi =0+sin(pi+frac{pi}{2})=-sinfrac{pi}{2}=-1\\sin(-5)-cospi =-sin5-(-1)=-sin5+1$

Answer 2

1) sinπ+sin1,5π=0-1=-1.
2) sin(-5)-cosπ=0,97-(-1)=0,97+1=1,97.