tolong bantu himpunan penyelesaian berikut ! f, g, h dan i

TriGonoMetRi

f][
3 tan² x + 4 = 5
tan² x = (5 - 4)/3
tan x = 1/√3
tan x = tan 60°

HP = {x = 60° + k.180° , k bil. bulat}

g][
cosec² x - 1/4 = 0 ??
1/sin² x = 1/4
sin² x = 4
tdk ada nilai x yg memenuhi

h][
2 cos x = √3
cos x = 1/2 √3
x = ± 30° + k.360°

HP = {x = 30° + k.360° atau x = -30° + k.360° , k bil bulat }