The displacement of SHM is written as X = X`sinθt if the displacement is written by X = Xθ sont then phase constant will be equal to_______________?

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The displacement of SHM is written as X = X`sinθt if the displacement is written by X = Xθ sont then phase constant will be equal to_______________?

A. 0°
B. 45°
C. 90°
D. 180°