Mathematics
Senior High
Resolved
sin π-(A+B)/2
が cosA+B/2 になるのは何故ですか?
A-B
J= coS
2
元ー(A+B)
sin
2
G200
Gnie
A-B
= COS-
2
A+B
COS
2
Answers
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ありがとうございます!