Sine and Cosine of a Triangle

Find angle A

• 53.6
• 13.3
• 113.1

What is the measure of angle A?

• 50 degrees
• 60 degrees
• 78 degrees
• 74 degrees

We can use SOH-CAH-TOA for...

• Any triangle ever
• Non-right triangles only
• Right Triangles only
• Never

Set up the problem.

• sin(47) = x/28
• cos(47) = x/28
• tan(47) = x/28
• cos(47) = 28/x

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

Find the length of AC

• 10.1

• 10.0

• 10.9

• 8.86

• 36.2°
• 43.5°
• 53.8°
• 23.9°

Find the value of a.

• 13.4

• 12.9

• 13.0

• 12.8