Stitz-Zeager_College_Algebra_e-book

# I for f 4 2 sin show that f f and the graph

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Unformatted text preview: , b = 10 and your choice of a yield only one triangle where that unique triangle has three acute angles. 8. Use the cases and diagrams in the proof of the Law of Sines (Theorem 11.2) to prove the area formulas given in Theorem 11.4. Why do those formulas yield square units when four quantities are being multiplied together? 9. Find the area of the triangles given in Exercises 1a, 1m and 1t above. 772 Applications of Trigonometry 11.2.2 Answers α = 13◦ β = 17◦ γ = 150◦ a=5 b ≈ 6.50 c ≈ 11.11 (k) α = 42◦ β ≈ 23.78◦ γ ≈ 114.22◦ a = 39 b = 23.5 c ≈ 53.15 (b) α = 73.2◦ β = 54.1◦ γ = 52.7◦ a = 117 b ≈ 99.00 c ≈ 97.22 (l) α = 6◦ β ≈ 169.43◦ γ ≈ 4.57◦ a = 57 b = 100 c ≈ 43.45 (c) Information does not produce a triangle (d) α = 95◦ β = 62◦ γ = 23◦ a = 33.33 b ≈ 29.54 c ≈ 13.07 (m) α = 53◦ β = 74◦ γ = 53◦ a = 28.01 b ≈ 33.71 c = 28.01 (e) Information does not produce a triangle (n) α ≈ 28.61◦ β = 102◦ γ ≈ 49.39◦ a ≈ 8.20 b = 16.75 c = 13 (f) α = 117◦...
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