Number of results: 3
prove that (cotx+tanx)(cotx-tanx) = 1/(sin^2 x) - 1/(cos^x)
January 23, 2012 by Amir
The difference of two numbers is 12. Two fifths of the greater number is six more than one-third of the lesser number. Find both numbers.
October 1, 2010 by evelyn
in a class there are 17 right handed students and 3 left handed students, what percent of the class is right handed?
October 2, 2012 by Anonymous