Mathematics
Senior High
(2)のcos(α－β)のとき教えて欲しいです🙇♀️
*302 が鋭名, 2が鈍角であるとき, 次の値をボめょ。
(⑪) singニっ cos2=ー言 のとき sin(e寺の, tan(o寺が
(2) tang三1 tanニー2 のとき tan(e+め, cos(e-9
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