Matematika soal limit trigonometri

langsung aja ya

Lim (cosx / x sinx - cos^2x/xsinx)
Lim (cos x - cos^2x)/xsinx
Lim cosx(1 - cosx)/xsinx
Lim cosx . 2.sin^2(1/2x) / xsinx
2.Lim cosx . Lim sin(1/2x)/x . Lim sin(1/2x)/sinx
2.cos 0° . (1/2)/1 . (1/2)/1
2.1.1/2.1/2
2/4
1/2

Jwb. E


*Lim x-->0
* cos2x = 1 - sin^2x
2sin^2x = 1 - cos2x
2sin^2(1/2x) = 1 - cosx