A camera is mounted on a tripod 4 feet high at a distance of 10 feet from George, who is 6 feet tall. If the camera lens has angles of depression and elevation of 20 degrees, will George's feet and head be seen by the lens? If not, how far back will the camera need to be moved to include George's feet and head?
The colour of your question is different but my response is the same as that given in post #4 of this thread: http://www.mathhelpforum.com/math-he...plication.html
My describtion of the picture in the textbook:
George stands opposite a camera by 10 feet.
The camera facing George is 4 feet high. George is 6 feet high.
The camera measures, at the same time, an angle of depression of 20 degrees and an angle of elevation of 20 degrees FACING George.
Now, can you help me?
Now, can you show what you've tried to do ?Now, can you help me?
Not that there is a problem with that. It's just that we, poor math-addicted, are already slaves of mathematics. So if we have to be your slaves too, our health shall not tolerate this exceeding.
Now, magentarita, we've talked about this before. you are getting more help than you realize. we want you to understand what you are doing. drawing the diagram helps. because from drawing the diagram, you would realize we are dealing with right-triangles. and then you don't have many things you can try from there. the are pretty much only two methods you were taught to deal with triangles, Pythagoras' theorem and trig ratios. one has to work here. please help us help you. let us understand what is giving you trouble. you will have to be able to do these questions on your own at some point!