Stitz-Zeager_College_Algebra_e-book

Example 1066 6 the roof on the house below has a 612

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Unformatted text preview: θ 2 336 527 =− 119 169 1 49 • tan(2θ) = − 4 13 =− 7 8 = 15 16 11 θ sin 2 (d) 2 cos(4θ) sin(5θ) • tan θ 2 2520 1241 25 = 81 120 119 θ 3 • tan =− 2 2 √ 15 • tan(2θ) = − 7 θ 1 • tan = 2 15 56 33 117 (c) cot(α + β ) = 44 (c) tan(α − β ) = cos(5θ) − cos(7θ) 2 (c) 2 sin √ • tan(2θ) = − (b) cos(α − β ) = cos(2θ) + cos(8θ) 2 2 1241 2809 81 = 106 • cos(2θ) = • cos √ • tan(2θ) = − 33 65 125 (b) sec(α + β ) = 117 16 65 5 17. (a) csc(α − β ) = − 4 9 θ sin 2 θ 2 527 625 • cos(2θ) = − 9 13 √ 15 • sin(2θ) = − 8 θ 1 • sin = 2 16 (b) −2 cos θ 2 6− (c) − 2520 2809 25 = 106 16. (a) sin(α + β ) = 25. (a) 2 • cos(2θ) = • sin(2θ) = • sin (d) θ 2 √ 336 625 1 = 50 • sin(2θ) = • sin (c) θ 2 (b) 2+ 2 √ √ 6− 2 √ 13. ln |x + x2 + 16| − ln(4) (f) x2 • sin(2θ) = − • sin 2 (e) sin(8θ) + sin(10θ) 2 √ π (e) 2 cos θ − 4 √ π (f) − 2 sin θ − 4 (c) 1 θ 2 672 10.5 Foundations of Trigonometry Graphs...
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