7-5 - 7­5.notebook November 18, 2010 7­5 The Other Trig....

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Unformatted text preview: 7­5.notebook November 18, 2010 7­5 The Other Trig. Functions tangent θ = tan θ = y/x = sin θ/cos θ cotangent θ = cot θ = x/y = cos θ/sin θ secant θ = sec θ = r/x = 1/cos θ cosecant θ = csc θ = r/y = 1 /sin θ Mar 11­7:31 AM Reciprocal relations sin θ = 1/csc θ cos θ = 1/sec θ tan θ = 1/cot θ cot θ = 1/tan θ sec θ = 1/cos θ csc θ = 1/sin θ Mar 11­7:42 AM S T A C 1 7­5.notebook November 18, 2010 tan θ 0 √3/3 1 √3 undefined Exs. use calculator: 1. tan 2030 2. cot 1650 3. csc (­1) 4. sec 11 Mar 11­10:19 AM Ex. If θ is a 2nd quadrant angle and tan θ = ­3/4, find the other 5. sin θ cos θ tan θ cot θ sec θ csc θ Mar 11­10:30 AM class ex. p. 285 4,5 written ex. p. 285 1­6 2 7­5.notebook November 18, 2010 Evaluate the following: 1. sin π 2. tan 7π/4 3. sec π/2 4. csc 1200 5. cos 2250 p.286 23­28 6. cot 3150 7. cos 2400 8. sec 7π/6 9. csc 00 10. cot 1500 Mar 11­10:33 AM 3 ...
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