Mathematics
Senior High
Solved
数2の問題です。なぜcos225°が-√2\1になるのか分かりません。解説お願い致します。
325
1-cos225°
sin? 112.5° =
2
0Sao-!
S1-
0S20=
11
12
2+V2
2
4
OSS
0 sin112.5° >0 より
6S20 +1
2+/2
2
0Seoo-1%= (Sin l12.5° =
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
