Page 30 - E-MODUL TRIGONOMETRI KELAS X SMA (EVA KURNIA RAHAYU_1)

9.

12
Cos A =
X
12
3
=
4 X
3x = 48
48
x =
3
= 16
(Jawaban B)

10
10. Cos A =
26
2
2
a – b = (a+b) (a-b)

= 36 . 16
= 6 . 4

= 24

24
Sin A =
26
(Jawaban C)

Trigonometri Kelas X 20