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Mathematics 22 Online
OpenStudy (anonymous):

A right triangle has hypotenuse of length c and two legs of lengths a and b, but these lengths are changing, in such a way that the triangle is still a right triangle as the side lengths change. The length of the hypotenuse is increasing at a rate of 2cm/sec, and the length a is increasing at a rate of 4cm/sec. I think i understand how this question works. you need to use Pythagoras theorem

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