W warwick Full Member Joined Jan 27, 2006 Messages 311 Apr 6, 2006 #1 There are various methods listed in the book, but they're not working. Or I'm doing them incorrectly. cot squared x / csc x - 1 = 1 + sin x / sin x
There are various methods listed in the book, but they're not working. Or I'm doing them incorrectly. cot squared x / csc x - 1 = 1 + sin x / sin x
skeeter Elite Member Joined Dec 15, 2005 Messages 3,204 Apr 6, 2006 #2 hint ... cot<sup>2</sup>x = csc<sup>2</sup>x - 1 = (cscx + 1)(cscx - 1)
W warwick Full Member Joined Jan 27, 2006 Messages 311 Apr 6, 2006 #3 skeeter said: hint ... cot<sup>2</sup>x = csc<sup>2</sup>x - 1 = (cscx + 1)(cscx - 1) Click to expand... [expletive delted] The product of a sum and a difference is equal to the difference of two squares. :roll:
skeeter said: hint ... cot<sup>2</sup>x = csc<sup>2</sup>x - 1 = (cscx + 1)(cscx - 1) Click to expand... [expletive delted] The product of a sum and a difference is equal to the difference of two squares. :roll:
