Mathematics
Senior High
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63 三角方程式
cÙNG Arang=vin
0≤a<7, 0≤B≤n 2 FL
2
(22)
π
2 -α = sina を用いて, sina = cos2β・・・・・・・① をみたす β
をαで表せ.
OMETHR
COS
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