You must remember that the periodicity of the function cos(x) is 2Pi.
Also you should know that the maximum value of cos(x) is obtained when x = 0.
So, the values of x for which cos(x) is maximum is x =0, 2Pi, 4 Pi, 6 Pi.
<span>So, x = Pi * k, with k = 0, 2, 4, 6, ...
An equivalent formula is x = 2Pi * n, with n = 0, 1, 2, 3, ..</span>
Answer Difference between the experimental and the theoretical probability is 2/5 . Step-by-step explanation: Spinner is spun 10 times, and experimental probability of landing on a 3 is 1/2, i.e. out of 10 times spinner lands 5 times into 3.