The Pythagorean trig identities allow the simplification of trig expressions
lesson notes:04 pythagorean trig identities
The Pythagorean trig identities allow the simplification of trig expressions
lesson notes:04 pythagorean trig identities
Finding the trig ratios for non-acute angles and what do the basic graphs of trig functions look like?
lesson notes:03 angles of any magnitude