题目

∠A的补角为125°12′，则它的余角为( )A. 54°18′ B. 35°12′ C. 35°48′ D. 以上都不对 答案：【答案】B【解析】两角互补和为180°，互余和为90°，先求出∠A，再用90°-∠A即可得出答案．∵∠A=180°-125°12′=54°48′，∴∠A的余角为90°-∠A=90°-54°48′=35°12′，故选B． –I want to make a kite to fly.    -- __________  You can easily buy one on the market.    A. Why not?            B. Good idea.         C. Why bother?      D. No way!