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Published byAdolfo Tibbals Modified over 3 years ago

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SOHCAHTOA TOA CAH SOH The three trigonometric ratios for right angled triangles are considered here. Click on a box to select a ratio.

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SOHCAHTOA SOH On the unit circle sin is observed sin 1 Back to menu

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SOHCAHTOA sin 1 SOH Now take a similar triangle

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SOHCAHTOA Opp Hyp By similar triangles SOH = sin = sin 1

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SOHCAHTOA cos 1 CAH On the unit circle cos is observed Back to menu

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SOHCAHTOA cos 1 CAH Now take a similar triangle

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SOHCAHTOA Adj Hyp By similar triangles CAH = cos = cos 1

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SOHCAHTOA TOA On the unit circle tan is observed tan 1 1 Back to menu

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SOHCAHTOA TOA tan 1 Now take a similar triangle

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SOHCAHTOA By similar triangles TOA Adj Opp tan 1 tan = =

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Section 1.4 Trigonometric Functions an ANY Angle Evaluate trig functions of any angle Use reference angles to evaluate trig functions.

Section 1.4 Trigonometric Functions an ANY Angle Evaluate trig functions of any angle Use reference angles to evaluate trig functions.

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