How do I solve these equations: sin(2θ) + sin θ = 0
sin(2θ) = sqrt 3 cos θ

for intervals 0=< θ < 2pi

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Which of the following is not a subset of {1,2,3}?