Question 21 options 0 1 157 2 No Solution 0 1 157 2 No Solut

Question 21 options:

0

1

1.57

2

No Solution

Solution

cos = /2

/2 = 3.14/2 = 1.57 > 1

the range of cosine function is [-1 , 1]

as /2 is greater than one, it is not in the range of the function.

Hence the solution doesnot exist

==> cos = /2 (No solution)