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bii17

  • 3 years ago

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

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  1. Gowthaman
    • 3 years ago
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    3.487 ft^2/s

  2. bii17
    • 3 years ago
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    @Gowthaman the answer should be -1.75

  3. Gowthaman
    • 3 years ago
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    verified u r correct

  4. Gowthaman
    • 3 years ago
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    |dw:1348990342741:dw|

  5. Gowthaman
    • 3 years ago
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    |dw:1348990385745:dw|

  6. Gowthaman
    • 3 years ago
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    |dw:1348990451547:dw|

  7. Gowthaman
    • 3 years ago
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    |dw:1348990511691:dw|

  8. bii17
    • 3 years ago
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    where did u get \[ d \theta / dt = - \pi/90\]

  9. bii17
    • 3 years ago
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    @Gowthaman how will you siimply this.. 25 sec^2 45

  10. bii17
    • 3 years ago
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    @Gowthaman ???

  11. Gowthaman
    • 3 years ago
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    u told rate of change of angle is 2 degrees, then

  12. Gowthaman
    • 3 years ago
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    |dw:1348991058732:dw|

  13. Gowthaman
    • 3 years ago
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    and sec 45 = 1.414

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