Which trigonometric ratio for a belongs with each value.

What is the inverse of the function f(x) = 2x + 1?

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

What is the point-slope equation of a line with slope -5 that contains the point (6,3)