Question

4cos^2(x-пи/6)-3=0
tg x - 2ctg x+1=0

(tg x +5)/2=1/cos^2 x

Answer 1

4sin x+4cos x -1=0 3-4sinX=0-4sinX=-34 sinX=3sinX=34sinX=0,753+4cosX=04Cos=-3cosX=-34cosX=-0,75