Question

Trigonometri

Tolong dibantu ya
Jawab dari a sampe c
Jangan asal kalo asal aku report

Mohon bantuannya

Answer 1

Jawab:

Penjelasan dengan langkah-langkah terlampir :

Answer 2

a = 10 cm

c = 12 cm

< C = 60°

a]

a/sin a = c/sin c

10/sin a = 12/sin 60°

10/sin a = 12/0,866

10 × 0,866 = 12 × sin a

8,66 = 12 × sin a

sin a = 8,66/12

sin a = 0,722

a = arc sin 0,722

a = 46°

< A = 46°

b]

< B = 180° - (< A + < C)

< B = 180° - (46° + 60°)

< B = 180° - 106°

< B = 74°

c]

c/sin c = b/sin b

12/sin 60° = b/sin 74°

12/0,866 = b/0,961

13,857 = b/0,961

b = 13,857 × 0,961

b = 13

Panjang b = 13 cm