Pls help quick this is so hard

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis

Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6