Question

как решить задачу?
sin(x+pi/6)*cos(x+pi/6)>0.25
$2sin alpha = 2sin( alpha ) + times cos( alpha )$

Answer 1

x+pi/6=y
1/2siny>0.25
siny>0,5
y (pi/6;pi-pi/6)
x+pi/6>pi/6; x+pi/6<p-p/6
x(0;p-p/3)