How do you prove tan^2(x)+1+tan(x)sec(x)=1+sin(x)/co s^2(x)?

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

Which equation represents the function on the graph?

Hey am have account in but wished to create an account here you guys will me with my make new friends of uk !