Inverse equation t=120r/r+120 R=???

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180