Friday

January 30, 2015

January 30, 2015

Posted by **may** on Sunday, January 9, 2011 at 9:17am.

- Trigonometry -
**drwls**, Sunday, January 9, 2011 at 9:34amOne radian is not a rate. It is an angle. Look at the problem statement again.

- Trigonometry -
**Reiny**, Sunday, January 9, 2011 at 10:05amdrwls is right, you must have left out the units of time.

(e.g. ... is changing at a rate of one radian per minute )

In that case, use the cosine law equation as your starting point

let the third side be x and the angle be Ø

x^2 = 5^2 + 8^2 - 2(5)(8)cosØ

2x dx/dt = 0 + 0 + 80 sinØ dØ/dt

from the original equation, find x , then sub in the given values

pretty easy after that.

**Answer this Question**

**Related Questions**

Geometry - Can you please explain the Side-Side- Side Postulate, The Side-Angle-...

math - Two sides of a triangle have lengths 15 m and 18 m. The angle between ...

Calculus - 1) Find correct to six decimal places root of the equation cos(x)= x...

geometry - Two sides of a triangle measure 2x – 4 and 7x – 2 units, respectively...

math - Two sides of a triangle have lengths 8 m and 24 m. The angle between them...

Geomentry - What is the converse of the theorem statement: If a line parallel to...

calculus - There is a right triangle with x and y legs labeled B and A, ...

AP Calculus - Two sides of a triangle are 15 and 20 feet in length. How fast is ...

MATH HELP PLZ - in RIGHT triangle abc the radian measure of angle c is pi/6, ...

Math - The sum of the lengths of any two sides of a triangle must be greater ...