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13-10-2020
Mathematics

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(1-cos^2 60°)+(1-sin^2 60°)=tan^2 60°

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13-10-2020

(1-cos^2 60°)= sin^2 60°
(1-sin^2 60°) = cos^2 60°
Sin^2 60° + cos^2 60°= tan^2 60°

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