How do you do these two problems? (note: they are lifted from: a site called regentsprep.org).
I feel like #6 is on the tip of my pencil. But I can't quite piece the info together. Circle 1 is x^2+y^2=16 and circle 2 is x^2+y^2=100. There must be some relationship (never mind that I reused x).
But #7 seems like there isn't enough information, no matter how many new radii or inscribed angles I draw, I can't find any useful information.