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Get me into Oxford - Trig problem
A pendulum is swinging through an angle of 80 degrees. The angle X (degrees), between the pendulum and the vertical, at time T, is given by X=a.Cos(60+T degrees).
Find a and the period of the pendulum. My solution for finding a, X=40(deg) when T=0 40(deg)=a.Cos(0) Cos(0)=1 a=40 For the next part i'm unsure of the value for X (160?), and even if I assume any value i've not been taught how to manipulate trig equasions in this form. Thanks, Max. |
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