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# Intro to the Pythagorean trig identity

Sal introduces and proves the identity (sinθ)^2+(cosθ)^2=1, which arises from the Pythagorean theorem! Created by Sal Khan.

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# Intro to the Pythagorean trig identity

Current time: 0:00Total duration: 4:16

0 energy points

Sal introduces and proves the identity (sinθ)^2+(cosθ)^2=1, which arises from the Pythagorean theorem! Created by Sal Khan.