Law of Cosines Worksheet with Answer Key

What's on the worksheet

1. Find the side named in each triangle ABC.
   a = 9, b = 13, C = 41^\circ; find c.b = 5.5, c = 8.2, A = 104^\circ; find a.a = 17, c = 12, B = 73^\circ; find b.a = 3.6, b = 2.9, C = 148^\circ; find c.
2. Triangle ABC is placed on the coordinate plane with C at the origin and B = (4, 0) on the positive x-axis.
3. A laptop is hinged at H.
4. A triangle has sides 5, 12 and x.
5. Triangle ABC has a = 9, b = 10 and c = 4.
6. Priya solves the triangle with a = 7, b = 13 and C = 40^.