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Exact trig ratios Table ..Easy way? (1 Viewer)

Marzaa

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I tend to favour the triangles as well as there is less memorisation involved then trig tables (hence less study required for HSC :)) and shows that u have a greater understanding on mathematical concepts
 

S1M0

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Charity F said:
i think after using them so many times i know them pretty well, but if i'm unsure i just scribble the triangles in the corner and double check.

eeeeasssyyy!!
Way to bump an old thread.
 
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hpi said:
dw io found out im jus gona use my calculator
Don't; you need to know exact trig. ratios.

Here, I'll upload something to remember, a PDF with math formulae; I cannot say that they'll be relevant or useful, though.
 
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As with anything, find patters.

Sine:
1/2
1/root2
root3/2

So remember, 2 is always on the bottom. On the top, it's 1,1,3 and the last one is a root. On the bottom, the middle is root.

For cos, they are reversed.

For tan, it's easy as. 1/root3, 1, root3. So the first and last are opposites, with the draction first.
 

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