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bondgirl007
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Homework Statement
The length of the hypotenuse of a right triangle is 10 cm. One of the acute angles is decreasing at a rate of 5 degrees/s. how fast is the area decreasing when this angle is 30 degrees?
Homework Equations
The Attempt at a Solution
I got the a and b using the cos and sin of the 30degrees. For a, I got 5[tex]\sqrt{3}[/tex] and for b, I got 5.
I know that a will stay constant when the angle is decreasing so da/dt is 0. For the db/dt I got (-50[tex]\sqrt{3}[/tex])/2
How am I supposed to find the area from this?
Any help would be appreciated!