Permisii ada yang bisa membantu,materi limit fungsi trigonometri kls 12
Limit Trigonometri
lim x→0 sin ax /bx = a/b
lim x→0 sin ax / tan bx = a/b
no. 6
cos 2x = 1 – 2 sin² x
cos 2(5/2 x) = 1 – 2 sin² (5/2 x)
lim x→0 2x sin 3x / (1 – cos 5x)
= 1/(5/2) . 3/(5/2)
= 2/5 × 6/5
= 12/25
no. 7
lim x→0 (sin 3x – sin 3x cos 6x) / (x tan 6x sin 2x)
= 3/1 × 2 × 3²/(6 × 2)
= 9/2
no. 8
sin² x + cos² x = 1
lim x→0 x² tan (x + R/3) / (cos² x – 1)
= lim x→0 x² tan (x + R/3) / ( – sin² x)
= – tan (R/3)
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