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Persamaan Trigonometri, : - Coggle Diagram

- - - - Contoh Soal :
        The Solution set of cos x = ½ √2
        0 ≤ x ≤ 2 π is.....
        cos x = ½ √2
        cos x = √2/2 =½ √2
        cos x = 45°
        k=0
        (i) x = 45 + 0.360° =45°
        (ii) x = -45+0.360° = -45°
        HP { -45°, 45°}
  - - - contoh soal :
        -The solution set of tan x = 1 for 0° <x<360° is
        jawaban :
        tan x = 1 = tan 45°
        k = 0
        x = 45° + 0 . 180= 45°
        k = 1
        x = 45° + 1.180=225°
        HP = {45°, 225°}
  - - - Bentuk umumnya : Sin X = Sin a
        Penyelesaian :
        (i) X = a + K . 360
        (ii) X = (180-a) + K . 360 k e bil.bulat
- - - - contoh soal: