why is cos^2 2@ + sin^2 2@ =1

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sec4 Singapore

why is cos^2 2@ + sin^2 2@ =1

Date Posted: 6 years ago

Arnold K H Tan

6 years ago

Its a given Pythagorean identity. Sin^2 X + cos^2 X = 1. X can be 2(theta) or anything else.

Jonathan Has Been Failing AMaths Lmfao

6 years ago

ohhh ok thank u so much my doubt is cleared

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Date Posted: 6 years ago