Mathematics
Senior High
全く分かりません💦
解説お願いします🙏
(4) <a<^ C₂
< C, cosa =
(i) sin 2a=
(ii) cos2a=
コケコ
ス
セ
(iii) tan2 = ソタ
(5) =<a</=1
シ
サ
チ
TC, cosa:
√5
のとき、次の値を求めよ。
5
13
=
のとき, sincom
||
N
テト
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