If cos theta 4/5 and theta lies in quadrant 2, what is the value of tan theta?

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

Rewrite so the subject can be y in the formula d=m-y/y+n

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.