how to do these types of qns??any tips??

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- October 14th 2008, 03:02 AMmaybeline9216Inverse trigonometric function
how to do these types of qns??any tips??

- October 14th 2008, 03:12 AMPeritus
1. (i)

all the other problems can be solved similarly using various trigonometric identities. So you better familiarize yourself with them. Here's a good place to start:

List of trigonometric identities - Wikipedia, the free encyclopedia - October 14th 2008, 03:24 AMmaybeline9216
http://www.mathhelpforum.com/math-he...7ad2dd16-1.gif

How do u get this? the 1.2 how to get did u use any exact values of trigo functions? If so, wat did u use??

http://www.mathhelpforum.com/math-he...ac410532-1.gif

Do u have any special way to rmb it?? cos it is unlike the half-angle formulae

thks for the link but i am so "overwhelmed" by it... - October 14th 2008, 08:44 AMNyRychVantel
Do you know that ?

So,

There's no need to remember complicated trigo identities, just remember the original identities(which is given on your formula table during your O Level exam) and manipulate it.

is derived from

Similarly, for half-angle formula, consider

- October 15th 2008, 06:08 AMmaybeline9216