You have a Mauser .32 Auto. It was made in Obendorf- D.R.P.u.A.P. means "Deutsche Reichs patenten und Auslandische Patenten" (German Patents and Foreign Patents). Usually found on commercial, non-military guns.
Value could be anywhere from $50-$500, depending on exact model, condition, and originality. This will really need a hands on appraisal by someone that knows European guns. We simply can't do it sight unseen- sorry.
The square of 765 equals 585225. The cosine of 585225 equals -0.70710678118707 for your answer. Hope I helped!
Tough to answer without seeing pictures of this pistol. Values for pre-'45 examples generally range from 200 to 600usd. The final value would be based on condition and if it is original /as issued.
$175 if in good condition
50-100 or so
50-100
3.4% of 765= 3.4% * 765= 0.034 * 765= 26.01
50-100 or so
* 47933 Crawfordsville 765 * 47934 Crawfordsville 765 * 47935 Crawfordsville 765 * 47936 Crawfordsville 765 * 47937 Crawfordsville 765 * 47938 Crawfordsville 765 * 47939 Crawfordsville 765
maybe 100
382.5= 50%/100% * 765= 50/100 * 765= 0.5 * 765= 382.5
765
About $175- $200, depending on EXACT model and condition.