Comments on: O Level Additional Math – How To Prove Trigonometry Identity http://www.singaporeolevelmaths.com/2008/09/29/o-level-additional-math-how-to-prove-trigonometry-identity/ Simple Tips for Better Maths Results! Wed, 19 Oct 2011 12:26:29 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: simon ng'uni http://www.singaporeolevelmaths.com/2008/09/29/o-level-additional-math-how-to-prove-trigonometry-identity/comment-page-1/#comment-2572 simon ng'uni Thu, 15 Sep 2011 23:37:34 +0000 http://singaporeolevelmaths.com/?p=316#comment-2572 i dont still understand i dont still understand

]]> By: Ai Ling http://www.singaporeolevelmaths.com/2008/09/29/o-level-additional-math-how-to-prove-trigonometry-identity/comment-page-1/#comment-2479 Ai Ling Wed, 27 Apr 2011 02:24:35 +0000 http://singaporeolevelmaths.com/?p=316#comment-2479 Anthony: (1-sinx)^2 = (1-sinx)(1-sinx) 1-sin^2x = (1-sinx)(1+sinx) Note: sin^2x is read as sin square x (a-b)^2=(a-b)(a-b) (a^2-b^2)=(a-b)(a+b) Everything is correct in the example. Anthony:
(1-sinx)^2 = (1-sinx)(1-sinx)
1-sin^2x = (1-sinx)(1+sinx)
Note: sin^2x is read as sin square x

(a-b)^2=(a-b)(a-b)
(a^2-b^2)=(a-b)(a+b)

Everything is correct in the example.

]]> By: Anthony http://www.singaporeolevelmaths.com/2008/09/29/o-level-additional-math-how-to-prove-trigonometry-identity/comment-page-1/#comment-2472 Anthony Sun, 24 Apr 2011 05:18:49 +0000 http://singaporeolevelmaths.com/?p=316#comment-2472 This example is wrong and makes no sense. (1-sin)^2 equals (1-sin)(1+sin) This example is wrong and makes no sense. (1-sin)^2 equals (1-sin)(1+sin)

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