8. a 10, b= 11, c= 12

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Chapter1: The Six Trigonometric Functions
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I need help with question #8
6:43
X
Copy of Pr...
CP Pre-Calculus
2.7-2.9 Problem Set A
Name:
Date:
The Law of Cosines - SSS, SAS
Objective: To apply the law of cosines to find unknown parts of a triangle.
Section 1:
Solve each AABC. Give angle measures to the nearest tenth of a degree and side
lengths to three significant digits.
1.
4.
7.
8.
LA = 50°, b = 3, c = 8
LC 115°, a = 5,b=9
a = 8,b=7,c=13
a = 10, b = 11, c = 12
In problems #9 and # 10, find the length of AD in the diagram.
9.
10.
Section 2:
12.
LC = 60°, b = 5, a = 8
LB 120°, a
a = 9, b = 40, c = 41
a 6, b= 10, c = 7
16, c = 14
11. A parallelogram has a 70° angle and sides 6 cm and 10 cm long. How long
are the diagonals?
13.
14.
AB= 8, BD = 7, DC = 5, AC = 10
AB= 5, BD = 5, DC = 3, AC = 7
Find the area of each quadrilateral to the nearest square unit.
An isosceles trapezoid has a height of 4 cm and bases 3 cm and 7 cm long.
How long are its diagonals?
10
Transcribed Image Text:6:43 X Copy of Pr... CP Pre-Calculus 2.7-2.9 Problem Set A Name: Date: The Law of Cosines - SSS, SAS Objective: To apply the law of cosines to find unknown parts of a triangle. Section 1: Solve each AABC. Give angle measures to the nearest tenth of a degree and side lengths to three significant digits. 1. 4. 7. 8. LA = 50°, b = 3, c = 8 LC 115°, a = 5,b=9 a = 8,b=7,c=13 a = 10, b = 11, c = 12 In problems #9 and # 10, find the length of AD in the diagram. 9. 10. Section 2: 12. LC = 60°, b = 5, a = 8 LB 120°, a a = 9, b = 40, c = 41 a 6, b= 10, c = 7 16, c = 14 11. A parallelogram has a 70° angle and sides 6 cm and 10 cm long. How long are the diagonals? 13. 14. AB= 8, BD = 7, DC = 5, AC = 10 AB= 5, BD = 5, DC = 3, AC = 7 Find the area of each quadrilateral to the nearest square unit. An isosceles trapezoid has a height of 4 cm and bases 3 cm and 7 cm long. How long are its diagonals? 10
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