- #1

- 50

- 10

- Homework Statement
- Find the minimum angle value ##\theta## such that:

##\theta##= 2 ##\theta_1## - 4 ##\theta_2## + 180

##\theta_1## and ##\theta_2## < 90 , ##\theta_1## > ##\theta_2##

##\sin\theta_1=n \sin\theta_2##

- Relevant Equations
- n/a

I tried to do it by derivative but there are two variables, so I don't know how to proceed. Does anyone know how I can solve it?

Remembering that you don't need to find the value of ##\theta##. I just need to find a relationship between ##\theta_1## and ##\theta_2##

Remembering that you don't need to find the value of ##\theta##. I just need to find a relationship between ##\theta_1## and ##\theta_2##