- #1

thereddevils

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## Homework Statement

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 .

## Homework Equations

## 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]