Finding Missing Parts of Triangles

Find the length of the missing side.

• 20 in.

• 68 in.

• 16 in.

• 80 in.

Find the length of the missing side. 

• 17 cm

• 22 cm

• 15 cm

• 13 cm

Solve for x.

• x = 12.1sin24°

• x= 12.1/(sin24°)

• 12.1 = sin24°

• x = sin^-1(12.1/24)

What is the length of side x?

• sin^-1 = 28/14

• sin^-1 = 14/28

• 14sin28°

• 14tan28°

Choose the correct ratio.

• cos(33)=x/14

• sin(33)=x/14

• cos(33)=14/x

• sin(33)=14/x

• A
• B
• C
• D

• A
• B
• C
• D

What equation can be used to solve for x?

• Sin(40°)= x/40 

• Sin(40º)=x/19

• Cos(40º)=x/19

• Tan(40°)=19/x

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

• Any triangle ever

• Non-right triangles only

• Right Triangles only

• Never

Solve for x.

• 30°

• 45°

• 60°

• 90°