Sin 120: °

Sin 120 °: All about sin 120 degrees, incl. the trigonometric identities. Besides the value of sin120 °, we also have useful information and a calculator. Find the exact value of sin 120° , see step-by-step formulas, and learn shortcuts to remember it for exams. Master sin 120 with visual aids, proofs, and solved examples for quick revision. On the trig unit circle: sin 120 = sin (180 − 60) = sin 60 = 3 2 Was this answer helpful? Now, Sin ( 180°- 120 °) = sin 120 ° Therefore, sin 120 °= sin 60° From the trigonometry table, use the value of sin 60° which is equal to √3/2. Hence, the value of sin 120 degrees is √3/2 Method 2 By using the value of cosine function relations, we can easily find the value of sin 120 degrees.