2x<=0 или x+13<=0
x<=0 или x<=-13
<span>М(11п/4)
cos(11п/4) =-</span><span><span>√2/2</span>
sin(11п/4) = </span><span>√2/2
М(-41п/6)
cos(-41п/6) = -1/2
sin(-41п/6) = -</span><span>√3/2
М(117п)</span>
cos(117п) = -1
sin(117п) = 0
Не все сорри сам историю пишу