The angle that a swinging simple pendulum makes with the vertical axis obeys the equation (t) = (0.150 rad) cos[(2.85 rad/s)t + 1.66 rad] where time...

The angle that a swinging simple pendulum makes with the vertical axis obeys the equation

Θ(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 m

B) 0.83 m

C) 1.21 m

D) 2.02 m

E) It cannot be determined from the information given.