Note: You must be registered in order to post a reply.
T O P I C R E V I E W
Posted - 03/23/2011 : 00:01:12 Please help me out with this 2 sums
The angle of elevation of a cloud from point h metres above the surface of a lake is and the angle of depression of its reflection in the lake is . Prove that the height of the cloud above the lake is h(tan +tan )(tan -tan )