Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: E whakarato ana te tātai a Euler i tētahi hononga kaha i waenganui i te tātaritanga me te trigonometry, ā, e whakarato ana i tētahi whakamāramatanga o ngā taumahi sine me te cosine hei huinga taumaha o te taumahi taupū:  Patai: He aha te tikanga o Euler?
he hononga kaha i waenganui i te tātaritanga me te trigonometry