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You are not logged in. #1 20130313 03:23:46
Using the Law of CosineHi all, Last edited by Curio (20130313 03:24:59) #2 20130313 05:46:14
Re: Using the Law of Cosinehi Curio, Last edited by bob bundy (20130313 05:48:29) You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #3 20130313 07:18:31
Re: Using the Law of CosineHi, thanks for replying. You mentioned that the definition of cosine, adjacent divided by hypothenuse, can only be used on right triangles. When we are at pi/2 on the unit circle, the x and the y axis form a right triangle and we have an angle that is pi/2 or 90 degree between the x and the y axis. We should be able to divide the length of the side adjacent to 90 degree which is the x axis starting from the point (0,0) to the point (1,0), by the hypothenuse of that triangle . I would include an image to explain what I have just said but I don't see the upload option. Last edited by Curio (20130313 07:20:31) #4 20130313 09:36:17
Re: Using the Law of Cosinehi Curio Last edited by bob bundy (20130313 09:40:00) You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei 