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歡迎您訪問數學考題練習:一輪船航行到B處測得小島A的方向為北偏西30°!

數學考題練習:一輪船航行到B處測得小島A的方向為北偏西30°

更新時間:2024-01-12 16:40:31作者:貝語網校

一輪船航行到B處測得小島A的方向為北偏西30°,那么從A處觀測B處的方向為

A.南偏東30°

B.東偏北30°

C.南偏東60°

D.東偏北60°

試題答案

A

試題解析

根據方位角的概念,畫圖正確表示出方位角,即可求解

解答:解:由于∠1=30°,

∠2=∠1(兩直線平行,內錯角相等)

所以∠2=30°

從A處觀測B處的方向為南偏東30°.故選A.

點評:正確畫出方位角,根據平行線的性質解答.

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