Brahmagupta's formula, 브라마굽타 공식

[@mathman5872]

0:33 ( 1/2 * ab *sin D ) (x) -----> ( 1/2 * cd * sin D) (o)

[@dddonglee2655]

0:39 sin(180°-B)가 cosB가 아니라 sinB가 되는 것이 맞나요?

[@mathman5872]

Hi, ddd,,,!
Yes,,,,,,,,,,!
sin(180°-B) = sinB
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,
Recommend (추천영상입니다)---
ruclips.net/video/8SXiH3saJro/видео.html
channel name) MSolved Tutoring
Title) prove sin(180 - theta) = sin theta

[@dddonglee2655]

@@mathman5872 Thank you😁