If the tip of the pendulum of a clock travels \( 13.2 \mathrm{~cm} \) in one oscillation and the...

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If the tip of the pendulum of a clock travels \( 13.2 \mathrm{~cm} \) in one oscillation and the length of the pendulum is \( 6.3 \mathrm{~cm} \), then the angle made by the pendulum in half oscillation in radian system is
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