M141-Chapt2-2

M141-Chapt2-2 - cos(540) 2 3 (a) sin180 cos 45 (b) sin cos...

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Section 2.2 Trigonometric Functions (Unit Circle Approach)

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Recall: Arc length t = r. t (angle t in radians) Here r = 1 → so t = t P( x,y ) 1 1 -1 -1 x y t t x y By definition, the coordinates of point P are: X = cos t Y = sin t θ θ θ θ θ
θ θ θ θ θ θ θ θ

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θ θ θ θ
1 2 6 Let be a real number and let = , be a point 5 5 on the unit circle that corresponds to . Find the values of sin , cos , tan , csc , sec , and cot . t P t t t t t t t - ÷ ÷

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(a) sin(5 π ) (b)

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Unformatted text preview: cos(540) 2 3 (a) sin180 cos 45 (b) sin cos sin (c) csc tan 4 2 4 4 -+ Find: (a) cos135 (b) tan (c) sin 315 4 - 7 2 Find: (a) tan (b) sin ( 120 ) (c) cos 6 3 -- For the CO-FUNCTIONS, use their formulas: (a) cos 48 (b) tan (c) sec10 12 r 1 x y P(x,y) (-3, 3)...
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This note was uploaded on 03/01/2012 for the course MATH 141 taught by Professor Nedjlaougouag during the Spring '12 term at City Colleges of Chicago.

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M141-Chapt2-2 - cos(540) 2 3 (a) sin180 cos 45 (b) sin cos...

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