Precalculus 2014
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The point is .
Consider the point .
Here is opposite side and is adjacent side.
From the pythagoras theorem,the value of , here is hypotenuse.
Substitute the values .
Therefore and and .
The trigonometric ratios are :
(i)..
(ii).
(iii).
(iv).
(v).
(vi).
, , .
And , , .
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