Trigonometry

Asked by  | 2nd Jun, 2009, 12:07: PM

Expert Answer:

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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