Contributor Khan Academy
This video lesson introduces and proves the identity (sinθ)^2+(cosθ)^2=1, which arises from the Pythagorean theorem. Students can read the transcript of the video if they like. They can also view other students’ questions and answers about the topic in the comment section.
This video lesson introduces and proves the identity (sinθ)^2+(cosθ)^2=1, which arises from the Pythagorean theorem. Students can read the transcript of the video if they like. They can also view other students’ questions and answers about the topic in the comment section.
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