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數學問題....怎樣計?
發問:
http://i9.photobucket.com/albums/a69/lovehong/43543.jpg 點計?教我?
最佳解答:
此文章來自奇摩知識+如有不便請留言告知
Suppose it is a right-angled triangle. tan θ = b/a tan θ = 47/63 θ = arctan 47/63 = 36.7 deg, cor. to 3 sig. fig.
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