„角單位換算

z按下[ DRG ]可顯示一選單設定角單位(DEG, RAD, GRAD)，此 3 項 角單位的關係如下 :

180°=πrad = 200 grad

角度單位轉換的方式如下： ( 請參閱範例 32. ) :

1.將預設值變更設定為你轉換成的角單位。

2.鍵入一數值。

3.按[ DMS ]顯示選單，其選項包括° (度), ′ (分), ″ (秒), r (弧度), g (徑度)或 DMS (度-分-秒)。

4.選擇被轉換的角單位。

5.按[ ] 2 次。

z 欲轉換一角度值為 DMS 標記法的方式，選擇可將輸入值轉換為 DMS 標示方式的" DMS "，此處 1°30′0″表示 1 度 30 分 0 秒。 請

參閱範例 33.

z若要將 DMS 標記法的數值轉換成 10 進位的形式，選擇° (度), ′ (分), ″ (秒)。 請參閱範例 34.

„三角/反三角函數

本機提供標準三角函數與反三角函數的功能鍵 sin, cos, tan, sin –1,

cos –1及 tan –1。請參閱範例 35~37.

(註) : 使用這些函數鍵之前，請先確認目前角度單位的設定值。

„雙曲線/反雙曲線函數

本機藉由[ 2nd ] [ HYP ]計算雙曲線與反雙曲線函數– sinh, cosh, tanh, sinh –1, cosh –1及 tanh –1。請參閱範例 38~39.

(註) : 使用這些函數鍵之前，請先確認目前角度單位的設定值。

„座標轉換

按下[ 2nd ] [ RP ]可顯示一轉換直角座標與極座標的選單。 請參閱 範例 40~41.

直角座標

極座標

x + y i = r (cosθ+ i sinθ)

(註) : 使用這些函數鍵之前，請先確認目前角度單位的設定值。

C – 12

File name : CBM_SR285,A_HDBSR285T19_Chinese.doc

version : 2010/04/26

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Citizen SRP-280N/SRP-285N manual „ 角單位換算
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