Trigonometry - TRIGONOMETRY POWERPOINT Mr Aday Geometrycrusher.com sin o a h ∠ = a cos a a h ∠ = a tan o a a ∠ = a opposite opposite opposite

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Unformatted text preview: TRIGONOMETRY POWERPOINT Mr. Aday Geometrycrusher.com sin o a h ∠ = a cos a a h ∠ = a tan o a a ∠ = a opposite opposite opposite adjacent adjacent adjacent h y p o t e n u s e h y p o t e n u s e h y p o t e n u s e sin o b h ∠ = cos a b h ∠ = tan o b a ∠ = h y p o t e n u s e h y p o t e n u s e h y p o t e n u s e adjacent adjacent adjacent opposite opposite opposite b b b Find the sine of 30 ° and the length of the adjacent side 30 ° 1) From your calculator or the trig tables, find that sin 30 ° = .5 2) Remember that sine = opposite/hypotenuse. 3) Substitute .5 = opposite/18 4) Solve: opposite = 9 1 8 adjacent opposite Find the cosine of a ° and the length of the opposite side a ° 1) Remember that cosine = adjacent/hypotenuse 2) Cos a ° = 20/25 =.8 3) From your calculator or the trig tables, find where the cosine = .8, about 36.87 ° . 4) Angle a is 36.87° . 5) The opposite side can be found using the Pythagorean Theorem or another trig function....
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This note was uploaded on 01/12/2011 for the course MAT117 MAT 117 taught by Professor Ranjitrebello during the Spring '09 term at University of Phoenix.

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Trigonometry - TRIGONOMETRY POWERPOINT Mr Aday Geometrycrusher.com sin o a h ∠ = a cos a a h ∠ = a tan o a a ∠ = a opposite opposite opposite

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