1. Prove that 1 + tan^2θ= 1/ cos^2θ
2. A right cylindrical container 8 cm in base diameter contains water. 6 metallic balls of radii 2cm are put into the container. If all the balls are immersed and no water overflows, find the rise in water level.
maths
2008-08-08 9:36 pm
回答 (1)
2008-08-08 9:49 pm
收錄日期: 2021-04-22 00:37:06
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https://hk.answers.yahoo.com/question/index?qid=20080808000051KK01272