(1-cosx)/(tanx) + (sinx)/(1+cosx)

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Anyone know? will mark brainliest if you're correct!

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?