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You are not logged in. #1 20090605 10:15:42
trigonometri problem1. find value of 2. find value of 3. if , prove 4. if , prove Last edited by nurshodiq (20090605 11:20:41) #2 20090608 13:08:47
Re: trigonometri problemanswer for (1) find the value of cos^2 (18) + cos^2 (54): #3 20090610 15:36:35
Re: trigonometri problemthanks baskar, i had answer for #1. but different with yours, Last edited by nurshodiq (20090610 15:44:24) #5 20090611 02:15:29
Re: trigonometri problemI wanted to find a solution that uses the result from problem 3, which took a while and is probably not the easiest one, but here it is anyway: Last edited by Kurre (20090611 02:19:38) #6 20090611 22:49:25
Re: trigonometri problemi have a way to answer #4, and , so we have multiple both sides by 4 we have thanks Last edited by nurshodiq (20090611 23:25:02) 