Law of Sines & Cosines

Law of Cosines & Sines

By Casey Grigsby

Use when you have 2 sides with the Angle in between

OR

You have ALL three sides.

​

Law of Cosines

Use when you have TWO angles & a side

OR

You have 2 sides with a corresponding Angle

​

Law of Sines

Multiple Choice

Which would you use to solve this triangle?

• Law of Cosines

• Law of Sines

Multiple Choice

Which would you use to solve this triangle?

• Law of Cosines

• Law of Sines

Multiple Choice

Which would you use to solve this triangle?

• Law of Cosines

• Law of Sines

Multiple Choice

Which would you use to solve this triangle?

• Law of Cosines

• Law of Sines

Multiple Choice

Which would you use to solve this triangle?

• Law of Cosines

• Law of Sines

Multiple Choice

Which would you use to solve this triangle?

• Law of Cosines

• Law of Sines

Multiple Choice

Solve for X:

• 15.49447

• 103.2626

• 14.5600

• -49.4031

Multiple Choice

Solve for X:

• -516.8723

• 217.1276

• 14.7352

• 32.74429

Multiple Choice

Solve for X:

• 1.5568

• 46.8975

• .8185

• 2.5978

Multiple Choice

Solve for X:

• 45.1987

• -.7158

• .8185

• .6481