Please enable JavaScript.

Coggle requires JavaScript to display documents.

LINK MAP PERSAMAAN TRIGONOMETRI KELOMPOK: ALANDRA A.D, M. FARIS E.H,…

- - - - sudut istimewa
        (sin 1/2 = sin 30°)(sin 1/2√2 = sin 45°)(sin 1/2√3 = sin 60°)(sin 1= sin 90°)
      - sinus
        sin x = a + k . 360°
        sin x = (180°- a) + k . 360°
        
        Contoh
        
        Penyelesaian untuk sin x = 1/2, 0° ≤ x ≤ 720°
        
        sin x = 1/2
        sin x = sin 30°
        (i)x = 30°+k.360°
        (ii)x = (180-30)°+k.360°
        k=0
        (i)x = 30°+0.360°=30°
        (ii)x = (180-30)°+k.360°=150°
        k=1
        (i)x = 30°+1.360°=390°
        (ii)x = 150°+1.360°=510°
        k=2
        (i)x = 30°+2.360°=30°+720°=750°
        HP={30°, 150°, 390°, 510°}
- - - - x = a + k. 180°; k = bil.bulat
        
        Contoh dengan Jawaban
        
        x = tan 5/9 π tan untuk 0 <= x <= 2π
        x = 5/9 π + k 0.2π
        k = 0 -> x = 5/9 π + 0.2π = 5/9 π
        k = 1 -> x = 5/9 π + 1 2π = 14/9 π
        HP = {5/9 π, 14/9 π}
- - - - Cos x = cos 60°
        (1)x=60° + k.360°
        (2)x=-60° + k.360°
      - Contoh :
        K = 0
        (1)x=60+0.360=60
        (2)x=-60+0.360=-60
        K = 1
        (1)x=60°+1.360°=420°
        (2)x=-60°+1.360°=300°
        HP { 60, 300 }