value of sin 240 + sin 120 degree
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Answer:
3/4
Step-by-step explanation:
sin 120° sin 240° sin 270°
⇒ sin (90° + 30°) sin (180° + 60°) sin (180° + 90°)
⇒ cos 30° (-sin 60°) (-sin 90°)
⇒ (√3/2) × (√3/2) × 1
⇒ 3/4
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