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Trigonometry Powerpoint

Trigonometry Powerpoint - TRIGONOMETRY POWERPOINT Mr.Aday...

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sin o a h = a cos a a h = a tan o a a = a opposite opposite opposite adjacent adjacent adjacent hypotenus e hypotenus e hypotenus e sin o b h = cos a b h = tan o b a = hypotenus e hypotenus e hypotenus 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 18 adjacent opposite

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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. 6) Sin a ° = opposite/hypotenuse 7) Sin 36.87° = opposite/25 (Trig tables or calculator) 8) .6 = opposite/25 9) Opposite = 15 1) When using a calculator, the process is easier.
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