(a) Using a trig identity, write x(t)=−4cos(6t)+4sin(6t) using only one cosine function. x(t)= help (formulas) (b) Using a trig identity, write x(t)=4cos(6t)+4sin(6t) using only one cosine function. x(t)= help (formulas)
(c) Using a trig identity, write x(t)=e−5t(−4cos(6t)+4sin(6t)) using only one cosine function in your answer. x(t)= help (formulas) Note: You can earn partial credit on this problem.