i think is g(1)=-1.
hope that i can
p ÷ r = tan(x)
given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.
graph is missing so i will create the graph as per given information.
the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.
now we need to find about what is p ÷ r equal to.
so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.
p ÷ r=tan(x)
hence final answer is p ÷ r=tan(x).