The electric components E1 and E2 of two coherent electromagnetic waves are given as follows :
[tex]E_1=E_o\sin (\omega t-kx)[/tex]
[tex]E_2=E_o\sin (\omega t-k(x+\delta))[/tex]
These two waves superpose each other at a certain point . Derive the amplitude of the resultant wave in terms of k and delta .
The Attempt at a Solution
I tried adding them using the sin formulas , but i failed to express it in the form of
[tex]A \cos \theta \sin \omega t [/tex]