WA4 - Robert Edwin Goode Student ID 0451848 Mentor Nilajan...

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Robert Edwin Goode Student ID: 0451848 Mentor: Nilajan Paul Date: 10/08/11 Writing Assignment #4 Section 8.1[4,8,16,34,46] 4. Angle B = 180°-105°-45° = 30° a/sinA = b/sinB ↔ a/sin45°=10/sin30° a=10√2 8. Angle A = 180°-124.1°-18.7° = 37.2° a/sin37.2°=94.6/sin18.7° a=178.4m 94.6/sin18.7° = c/sin124.1° C=244.3m 16. Angle A = 180°-71.83°-42.57°= 65.6° 2.614/sin65.6° = b/sin42.57° b=1.942 1.942/sin42.57° = c/sin71.83° c=2.727 34. Sin48.2°/697cm = sin A/890cm A = 79.16°
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180°= 48.2°+79.16°+C C = 52.64° 697cm/sin48.2°= c/sin52.64° c=743cm 46. C=29°50’ = 29.83° Sin29.83°/5.21 = sinA/8.61 A=55.3° 180°=B°+29.83°+55.3° B= 94.87° Sin55.3°/8.61=sin94.87°/b b=10.43 Section 8.2 (10,12,24,30,64,68) 10. A=60°, b=8, c=3 a 2 =8 2 +3 2 -2(8)(3)cos60° a 2 =64+9-48*1/2 a=7 sin60°/7 = sinB°/8 B=81.8° 180°-81.8°-60° C=38.2° 12. a=1, b=√3, c=1 a 2 =b 2 +c 2 -2bc cosA
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1=3+1-2√3cosA A=30° Sin30°/1=sinB/√3 B=60° Sin60°/√3 = sinC/1 C=30° 24. a=28ft, b=47ft, c=58ft
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WA4 - Robert Edwin Goode Student ID 0451848 Mentor Nilajan...

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