Bilangan Pi dan Arcus Tangen

Kita telah mengetahui bahwa π/4 = tan-1 ½ + tan-1. Nah, sekarang buktikan bahwa:

arctan-1

Setelah menyelesaikan ketiga problem di atas, cobalah problem berikut:

Tentukan pecahan p/q yang memenuhi persamaan

arctan-2

*

Bandung, 02-05-2016

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