Answer:
-csc(14°)
Step-by-step explanation:
The given trigonometric expression is csc(-166°)
-166° is in the third quadrant.
It makes an angle of 14° with the x-axis.
Hence the principal angle for -166° is 14°
In the third quadrant the cosecant function is negative.
This implies that;
csc(-166°) =-csc(14°)
The correct choice is the second option.
