If , then for all permissible values of is
-1
0
1
Not a constant function
Allied Angles -
- wherein
The trigonometric ratios for angles in all the four quadrants.
Option 1)
-1
This is incorrect option
Option 2)
0
This is incorrect option
Option 3)
1
This is correct option
Option 4)
Not a constant function
This is incorrect option