Current time:0:00Total duration:6:12

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# Proof of the Pythagorean trig identity

Sal proves the Pythagorean identity (sinθ)^2+(cosθ)^2=1 for all real numbers. Created by Sal Khan.

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# Proof of the Pythagorean trig identity

Current time:0:00Total duration:6:12

0 energy points

Sal proves the Pythagorean identity (sinθ)^2+(cosθ)^2=1 for all real numbers. Created by Sal Khan.