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歡迎您訪問(wèn)數(shù)學(xué)考題練習(xí):涼山州政府在迎冬旅工程建設(shè)中需修建一座橋,設(shè)計(jì)!

數(shù)學(xué)考題練習(xí):涼山州政府在迎冬旅工程建設(shè)中需修建一座橋,設(shè)計(jì)

更新時(shí)間:2024-01-12 16:27:23作者:貝語(yǔ)網(wǎng)校

涼山州政府在迎冬旅工程建設(shè)中需修建一座橋,設(shè)計(jì)引橋的傾斜角為α,引橋坡面長(zhǎng)度為300米,則橋的高度為

A.300sinα米

B.300cosα米

C.米

D.米

試題答案

A

試題解析

利用所給角的正弦值即可求解.

解答:已知坡角和坡面長(zhǎng),則利用三角函數(shù)即可求得:橋的高度為300sinα米.故選A.

點(diǎn)評(píng):此題主要考查學(xué)生對(duì)坡度坡角的掌握及三角函數(shù)的運(yùn)用.

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