Course:MATH102/Question Challenge/2002 December Q2(v)
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{{#w4grb_rate:}} Hard Easy |
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Question
In the triangle shown here, if , the rate of change of side length at the instant that is given by
(a)
(b)
(c)
(d)
(e)
Hints
Hint 1 |
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Remember the Law of cosines: where is the angle opposite side |
Hint 2 |
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Use related rates. |
Solutions
Solution |
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To solve for , we write an expression for this formula using the law of cosines, then derive to find :
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