Asked by | 2nd Jun, 2009, 12:07: PM
the hypotenuse being the length of a side is positive. also note that for finding sine or cos ratios when we take the length of a side to be negative, it's not negative but it indicates the quadrant that the angle lies in.
e.g. in second quadrant, he cos ratio is nergative, so along the x-axis we need to be on the left side of zero, where the coordinates of any point are of the type(-x, 0) where x is a positive number.
hope this solves your doubt.
Answered by | 2nd Jun, 2009, 09:00: PM
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