7. [-/1 Points] DETAILS LARCALC11 10.4.039. Convert the polar equation to rectangular form and sketch its graph. r = 40 18 7 12 7 6 7 19 - 127 -6 7 6 12x PA 6 7 -12 1 18 5 O 6 7 3 x -3 JT 6 /T -8 7 ONeed Help? Read It Watch It Submit Answer 8. [-/1 Points] DETAILS LARCALC11 10.4.070. Find the points of horizontal tangency to the polar curve. r = a sin 0 050 0 (r, 8 ) = (smaller r value) (r, 0) (larger / value) Find the points of vertical tangency to the polar curve. (r, 0 ) = (smaller 0 value) (r, 0 ) = (larger 0 value) Need Help? Read It 9. 10.5/1 Points] DETAILS PREVIOUS ANSWERS LA Sketch a graph of the polar equation9. [0.5/1 Points] DETAILS PREVIOUS ANSWERS LARCALC11 10.4.073.MI. Sketch a graph of the polar equation. r = 7 sin(0) Pi/2 Pi/2 61 3 2 5 1 His 1 2 3 4 5 6 - 1 - 2 1 -3 O O - 3 - 2 -1 1 2 3 Pi/2 1/2 -6 -5 -4 -3 1 2 20 10 20 30 40 20 30 -4 Find the tangent line(s) at the pole (if any). (-i