有人騎單車遇到過隋棠嗎? - 單車
By Jacob
at 2008-11-22T11:33
at 2008-11-22T11:33
Table of Contents
首先,sin和tan都有人用
我都是以tan為準,然後在5%坡算出來都沒差
tan(45度)值為1,也就是100%
tan(30度)為1/sqrt(3) = 0.577 = 57.7%
如果是考慮另一種
sin(45度) = 1/sqrt(2) = 0.707 = 70.7%
sin(30度) = 1/2 = 0.5 = 50%
arc sin 30是什麼...
如果是30度的話 arc sin pi/6 = 31.57
如果是30的話 arc sin 30 不存在
如果是考慮sin的話是牆壁
考慮tan的話是45度坡
反正就是以上計算
實際上根本不會在路上碰到什麼30%坡 (接上人行道的30cm應該不算坡吧)
沒什麼好吵的 平常愛算sin或tan都可以
發現推文雞同鴨講所以回一篇
--
如果沒有末班車,
我們就數著花瓣去旅行。
--
我都是以tan為準,然後在5%坡算出來都沒差
推 Igloo:45度應該等於100% 30度等於 75% 是嗎? 11/22 09:25
tan(45度)值為1,也就是100%
tan(30度)為1/sqrt(3) = 0.577 = 57.7%
如果是考慮另一種
sin(45度) = 1/sqrt(2) = 0.707 = 70.7%
sin(30度) = 1/2 = 0.5 = 50%
推 t0128819:不太對,應該是指arc sin吧,arc sin 30應該是0.6=60% 11/22 09:55
^^^^^^^^^^ .... arc sin 30是什麼...
如果是30度的話 arc sin pi/6 = 31.57
如果是30的話 arc sin 30 不存在
→ MOONRAKER:%數=升高高度/前進里程 11/22 10:31
→ MOONRAKER:30°時前進2升高1,1/2=50%,45°為100% 11/22 10:34
→ MOONRAKER:上面那位arcsin使用方法錯誤 11/22 10:35
推 t0128819:45度的話用你的方法算應該也沒有100%... 我數字代錯.(炸 11/22 10:39
推 t0128819:因為是1/2^-1,100%的坡應該是牆壁? 11/22 10:43
如果是考慮sin的話是牆壁
考慮tan的話是45度坡
→ hectorhsu:怎麼現在還在討論這個= = 進一升一45度 100%啊 11/22 10:44
推 WMX:一般正常的道路~用tan或sin算出來差不多啦... 11/22 10:50
→ WMX:除了產業道路~我還沒看過有超過20%的坡... 11/22 10:52
→ WMX:想要爬30度、45度的坡...去公園找溜滑梯爬看看就知道了... 11/22 10:54
→ t0128819:怎麼會進一升一...你騎車應該是騎在斜邊上面吧.XD 11/22 11:03
推 hectorhsu:是啊,我說的是水平進1 11/22 11:21
→ t0128819:所以你算30度的時候是對的,45度就錯了... 11/22 11:24
推 hectorhsu:而且五度左右的算sin和tan幾乎是一樣的 11/22 11:25
反正就是以上計算
實際上根本不會在路上碰到什麼30%坡 (接上人行道的30cm應該不算坡吧)
沒什麼好吵的 平常愛算sin或tan都可以
發現推文雞同鴨講所以回一篇
--
如果沒有末班車,
我們就數著花瓣去旅行。
--
Tags:
單車
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