Tell me all the ones that cannot form a right triangle

The statement tan theta= -12/5, csc theta=-13/12, and the terminal point determained by theta is in quadrant two

Abc is dilated by a scale factor of 3 with the origin as the center of dilation, resulting in the image a'b'c'. if the slope of line ab is -1.2, what is the slope of line a'b'? a. -1.2b. 3.6c. 1.2d 1.8

If the numbers below were ordered from least to greatest, which number could you use to replace the blank? 0.20,2/5 □ , 3/4,8/10