Question

tentukan jawabannya
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Answer 1

2sin (x + 30°) = √3, 0 ≤ π ≤ 2π

2sin (x + 30°) = √3

sin (x + 30°) = ½√3

sin (x + 30°) = sin 60°

x + 30° = 60° + k . 360°

x = 30° + k .360°

• k = 0 → x = 30° + 0 . 360° = 30° (M)
• k = 1 → x = 30° + 1 . 360° = 390° (TM)

atau

x + 30° = (180° - 60°) + k . 360°

x + 30° = 120° + k . 360°

x = 90° + k . 360°

• k = 0 → x = 90° + 0 . 360° = 90° (M)
• k = 1 → x = 90° + 1 . 360° = 450° (TM)

..

HP = {30°, 90°}

• atau dalan bentuk radian

HP = {π/6, π/2}