Mathematics
Senior High
この四つの式は成り立つのか教えてください。
証明の式変形で使っていいのかわかりません。
Sinte suẞ= sin(t+A)
Cost + (ass=
cas (f+ B)
(+1)
Cost-cost = c-s (t-B)
sindu-sinẞ=
sin(-1)
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