The angle that a swinging simple pendulum makes with the vertical axis obeys the equationT(t) = (0.150 rad) cos[(2.85 rad/s)t + 1.66 rad]where time t is in seconds. What is the length of the pendulum?A) 0.15 mB) 0.83 mC) 1.21 mD) 2.02 mE) It cannot be determined from the information given..