WEBVTT

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Bine ai venit la lectia noastra despre grade si radiani

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probabil ca deja stiti

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conceptul de grad

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In exemplele noastre veti trece

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printr-o suita de probleme

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Probabil ca stii deja ca un unghi drept are 90 de grade.

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sau ca jumatatea unuil unghi drept are 45 de grade

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Si probabil ca stii deja ca

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intr-un cerc - si cam asa arata un cerc -

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desenat de mine

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Un cerc are 360 de grade

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Astazi va voi prezenta o noua unuitate de masura

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pentru unghiuri. Se numeste Radian

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Deci, ce este un radian?

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Voi incepe cu definitia

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ca sa va dati seama intuitiv de ce se cheama radian

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De data asta voi folosi o aplicatie care sa ma ajute sa desenez un cerc adevarat.

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Inca folosesc aplicatia radian, cerc

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ok