Saturday

December 20, 2014

December 20, 2014

Posted by **Jennifer** on Wednesday, April 28, 2010 at 12:54am.

- Math -
**Reiny**, Wednesday, April 28, 2010 at 8:26amx -- as defined

y = 20cosØ

x^2 + y^2 = 400

x^2 + 400cos^2 Ø = 400

2x dx/dØ - 2sinØcosØ = 0

dx/dØ = sinØcosØ/x

when x = π/3 , sinπ/3 =√3/2, cosπ/3 = 1/2

x^2 + 400(3/4) = 400

x = 10

dx/dØ = (√3/2)(1/2)/10 = √3/40

**Answer this Question**

**Related Questions**

Calculus Ladder Problem - A ladder 20 ft long rests against a vertical wall. Let...

math - A ladder 14 ft long rests against a vertical wall. Let \theta be the ...

Math - A ladder 20 ft long rests against a vertical wall. Let \theta be the ...

calculus - A ladder 14 ft long rests against a vertical wall. Let \theta be the ...

college - A ladder 10 feet long rests against a vertical wall. If the bottom of ...

math - A ladder 10 ft long rests against a vertical wall. let θ be the ...

calculus - A ladder 10 ft long rests against a vertical wall. let θ be the ...

Math - a ladder 10 ft long rests against a vertical wal. if the bottom of the ...

math - A ladder 10 m long rests on horizontal ground and leans against a ...

Math - A ladder 10 ft long rests against a vertical wall. If the bottom of the ...