Trigonometric Relationship for Light Passing Through a Slab

[member 731016]

Homework Statement

Pls see below

Relevant Equations

pls see below

$\gamma = \theta_1 - \theta_2$ where do you get that from?

Thank!

 

[phinds]

$\gamma = \theta_1 - \theta_2$ where do you get that from?

Uh ... simple trig. $\theta_1 = \theta_2 + \gamma$

 

[member 731016]

Uh ... simple trig. $\theta_1 = \theta_2 + \gamma$

Aah thank @phinds! Brain must have been dead, I see that now :)