Meaning of イン in Japanese

Apparently "the iPhone sounds the death knell for the Internet."

"Eh? Is the tangent cosine divided by sine?" "Other way round!"

You must accept the king of Spain as your leader.

You must write your name in ink.

May I have a signature?

I want you to be an Einstein.

How long have you and Jane been married?

Look at this old coin you have here.

Forming an information infrastructure, the real impact of the information highway is an expectation of new economic development due to a shift from a tangible hardware-industry to brain-oriented software-industry.

The impression that many German wines are sweet, and aren't suited for cooking is wide-spread.