In which step did she first make an error, and what was the error?
Answer
A
She first made an error in step 5 because she did not correctly graph y is equal to cotangent of x minus cosecant of x .
B
She first made an error in step 4 because the simplified form of the inequality should have been 1 is less than or equal to cotangent of x plus cosecant of x instead of 1 is less than or equal to cotangent of x minus cosecant of x .
C
She first made an error in step 6 because she chose the wrong interval in which the graph of one equation is at or above the graph of the other equation.
D
She first made an error in step 3 because she should not have subtracted 2 cotangent x and added 3 cosecant x to the right side of the inequality.