Sina-cosa+1/sina+cosa-1 - 1+sinA-cosA/1-sinA+cosA=2(1+cosA)

Find the missing part. use an improper fraction for your answer.

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Determine domain and range, largest open interval, and intervals which function is continuous.