# Find the Angle

1. Aug 10, 2013

### PerryKid

1. The problem statement, all variables and given/known data

Solve for $\theta$

2. Relevant equations

Unknown

3. The attempt at a solution

[Broken]

I know, but I have forgotten my basic geometry.

Last edited by a moderator: May 6, 2017
2. Aug 10, 2013

### TSny

Hello.

You have a good start with the 60 degree angle that you identified. Try working with the red right triangle in the attachment.

#### Attached Files:

• ###### Wedge.png
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3. Aug 10, 2013

### PerryKid

I wasn't sure if that was a right angle.

If so, then the entire problem was a piece of cake. If not, then it's more complicated than I thought.

Last edited: Aug 10, 2013
4. Aug 10, 2013

### TSny

I did make the assumption that the blue line shown is constructed to be a "normal line" (i.e., perpendicular to the slope). That's the usual case when working inclined plane problems.

However, if it is not given to be a normal line, then you can't find θ without additional information.

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