Geo H. - 5.5 Law of Sines/Cosines

Law of Sines/Cosines

By Ethan Lamont

Non-right Triangles

Up until now, we have solved for missing measures in right triangles.

Now, we will learn two methods for solving for sides and angles in non-right triangles: The Law of Sines and the Law of Cosines.

Non-Right Triangles

Law of Sines

​Law of Sines - Solving for a Side

Math Response

Solve for the missing Side using the Law of Sines.

Type answer here

Correct Answer: 10.404

Deg^°

Rad

​Law of Sines - Solving for an Angle

Math Response

Solve for the missing Angle using the Law of Sines.

Type answer here

Correct Answer: 50.679

Deg^°

Rad

Non-Right Triangles

Law of Cosines

​Law of Cosines - Solving for an Angle

Math Response

Solve for the missing Angle using the Law of Cosines

Type answer here

Correct Answer: 53.130

Deg^°

Rad

​Law of Cosines - Solving for a Side

Math Response

Solve for the missing Angle using the Law of Cosines.

Type answer here

Correct Answer: 4.601

Deg^°

Rad

Match

Solve for missing measures in the triangles using Law of Sines and Law of Cosines.

x = 7.14

x = 61.26

x = 37.73

x = 17.01

• x = 7.14

• x = 61.26

• x = 37.73

• x = 17.01