4.7. Area of a Triangle http://www.ck12.org
5.∆ABCifa= 4. 8 ,c= 3 .7, and^6 B= 54 ◦.
6.∆ABCifa= 12 ,b=5, and^6 C= 22 ◦.
7.∆ABCifa= 3 ,b=10, and^6 C= 65 ◦.
8.∆ABCifa= 5 ,b=9, and^6 C= 11 ◦.
9.∆ABCifa= 5 ,b=7, andc=8.
10.∆ABCifa= 7 ,b=8, andc=14.
11.∆ABCifa= 12 ,b=14, andc=13.- The area of a triangle is 12 square units. Two sides of the triangle are 8 units and 4 units. What is the measure
of their included angle? - The area of a triangle is 23 square units. Two sides of the triangle are 14 units and 5 units. What is the measure
of their included angle? - Given∆DEFhas area 32 square inches, what is the angle included between side length 9 and 10?
- Given∆GHIhas area 15 square inches, what is the angle included between side length 7 and 11?