Mark the tick against the correct answer in the following:
The value of is
To Find: The value of
Now, let x =
cos x =cos ()
Here ,range of principle value of cos is [0,]
x = [0,]
Hence for all values of x in range [0,] ,the value of
is
cos x =cos (2) (cos ()= cos () )
cos x =cos () (cos ()= cos )
x =