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**Intensity and Superposition of waves....**

## Homework Statement

Incident wave y=Asin(ax + bt + pi/2) is reflected by an obstacle at x=0 which reudces intensity of reflected wave by 36%. Due to superposition a resulting wave consist of standing wave and travelling wave given by y= -1.6 sinax.sinbt + cAcos(bt+ax)

Find amplitude of reflected wave, value of c and position of second antinode....

## Homework Equations

Intensity is proportional to amplitude square....

## The Attempt at a Solution

Now how are they getting this type of a n equation and what do they mena by a wave consisting of a standing as well as a travelling wave at the same time? i want help in finding out the value of these constants.....All i got is amplitude of the reflected wave is 3/5 times the incident waves' amplitude...(By Intensity is proportional to amplitude square....)....Thats it.... please help...