Does anyone know how to solve these out I haven’t been able to figure out the theorems to work the answer out?

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

(a. s."similarity in right triangles"solve for xa.) 10b.) 20c.) 14.5d.) [tex] 6\sqrt{3} [/tex]