0° < θ < 360°
A. 2 sin θ =1
_
B. √2 cos θ =1
trigonometry - - maths 問題
2007-07-18 7:23 am
回答 (3)
2007-07-18 7:39 am
A.
sin θ =1/2
θ = 30° & 150°
B.
cos θ =1/ √2
θ = 45° & 315°
sin θ =1/2
θ = 30° & 150°
B.
cos θ =1/ √2
θ = 45° & 315°
2007-07-18 7:29 am
A)
sinθ = 1/2
θ = 30° or 150°
B)
cosθ = 1/√2
θ = 45° or 315°
sinθ = 1/2
θ = 30° or 150°
B)
cosθ = 1/√2
θ = 45° or 315°
收錄日期: 2021-04-13 14:02:32
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https://hk.answers.yahoo.com/question/index?qid=20070717000051KK05746