This video looks at how the Pythagorean Identity came into existence and how it can be used to find solutions to trig equations using the unit circle.
LEGAL STUFF (VCAA)
VCE Maths exam question content used by permission, ©VCAA. The VCAA is not affiliated with, and does not endorse, this video resource. VCE® is a registered trademark of the VCAA. Past VCE exams and related content can be accessed at www.vcaa.vic.edu.au