Well… English IS a Germanic language- but calculus and statistics are both numbers as is multiplication- Same roots but…
To put it another way- it isn’t that English is derived from German- German is derived from German. Whaaat? Yeah. To be more precise- proto German. As is generally true across the world, going back in time a few decades can cause communications misunderstandings. Going back a century can make communicating in the same language difficult. Going back centuries or more can make the same language essentially foreign. So protogerman branched into a few language families- including Ingvaeonic languages- mostly north western early german. This German didn’t become English- instead it became pre proto French and pre proto English. Saxon and Frankish languages- which in time become proto and early English and French and other languages and then in time went through changes up to modern English and such. So the ROOTS of English are Germanic but it isn’t a language evolved…
.. from German as we know it or German as has been spoken in centuries. At the same time that these north western protoGerman offshoots were evolving into English, other German languages were evolving into modern German and certain very similar languages. So the two evolved independently but did have some exposure and effect on each other at various points after the initial split from proto German. The languages are more like cousins than siblings. The hardest part of foreign languages for most speakers is pronunciation because the sounds used in different languages and times and such vary. In most cultures children and babies are known to have distinctive pronunciation and truncate words or sounds often after 4+ tears of speech and immersion. Hearing and speaking sounds we aren’t used to isn’t generally easy. So german is like a cousin to English.
To put it another way- it isn’t that English is derived from German- German is derived from German. Whaaat? Yeah. To be more precise- proto German. As is generally true across the world, going back in time a few decades can cause communications misunderstandings. Going back a century can make communicating in the same language difficult. Going back centuries or more can make the same language essentially foreign. So protogerman branched into a few language families- including Ingvaeonic languages- mostly north western early german. This German didn’t become English- instead it became pre proto French and pre proto English. Saxon and Frankish languages- which in time become proto and early English and French and other languages and then in time went through changes up to modern English and such. So the ROOTS of English are Germanic but it isn’t a language evolved…