Media Summary: Sal introduces and proves the identity (sin(θ))^2+(cos(θ))^2=1, which arises from the Pythagorean theorem! Practice this lesson ...
Example Relating Trig Function To Side Ratios Basic Trigonometry Trigonometry Khan Academy - Detailed Analysis & Overview
Sal introduces and proves the identity (sin(θ))^2+(cos(θ))^2=1, which arises from the Pythagorean theorem! Practice this lesson ...