Mark the tick against the correct answer in the following:

The value of is

To Find: The value of

Now, let x =

cot x =cot ()

Here range of principle value of cot is []

x = []

Hence for all values of x in range [] ,the value of

is

cot x =cot () (cot ()= cot () )

cot x =cot () (cot ()= cot )

x =