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歡迎您訪問數學考題練習:有公共端點的兩條射線分別表示南偏東15°與北偏!

數學考題練習:有公共端點的兩條射線分別表示南偏東15°與北偏

更新時間:2024-01-12 16:41:52作者:貝語網校

有公共端點的兩條射線分別表示南偏東15°與北偏東25°,則這兩條射線所夾角的度數是

A.40°

B.50°

C.140°

D.130°

試題答案

C

試題解析

根據方位角的概念和平角的定義解答.

解答:解:南偏東15°和北偏東25°的兩條射線組成的角=180°-15°-25°=140°.

故選C.

點評:根據方位角的概念畫圖,正確表示出方位角,即可求解.

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