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the base of an isosceles triangle is 10 ft long and the base angles are decreasing at a rate of 2 degree per secnd. find the rate of change of the area when the base angles are 45 degree

Mathematics
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3.487 ft^2/s
@Gowthaman the answer should be -1.75
verified u r correct

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|dw:1348990385745:dw|
|dw:1348990451547:dw|
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where did u get \[ d \theta / dt = - \pi/90\]
@Gowthaman how will you siimply this.. 25 sec^2 45
u told rate of change of angle is 2 degrees, then
|dw:1348991058732:dw|
and sec 45 = 1.414

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