Question

решите пожалуйста.........

Answer 1

14
tg4x=√3
4x=π/3+πk
x=π/12+πk/4,k∈z
15
sinx+cos2x=0
sinx+1-2sin²x=0
sinx=a
2a²-a-1=0
D=1+8=9
a1=(1-3)/4=-1/2⇒sinx=-1/2
x=-π/6+2πk U x=-5π/6+2πk,k∈z