If x is in the third quadrant, then
a) Choose the possible values of cosec x from the bracket. {-3/5 ,3/5 ,5/3, -5/3 }
b)Evaluate tan x sec x for the x in part (a)
As x is in third quadrant, where CosecX is a negative quantity. Also
Hope this clears your doubt
With regards
Hope this clears your doubt
With regards