Homework Help: Trigonometry

Posted by Kersten on Saturday, December 19, 2009 at 12:38pm.

31). Find the area of the sector of a circle with a radius of 18 inches and a central angle of pheta=120 I put the info in A=1/2r^2pheta so that it read A=1/2(324)9pi/10. But I got 458.04, not the answer of 339.29. What did I do wrong?

Trigonometry - bobpursley, Saturday, December 19, 2009 at 4:21pm
120 degrees is a third of a circle, or 2PI/3 Where did you get 9PI/10?

The Greek letter Theta, I think, you are using.

Answer this Question

Related Questions

trigonometry - please check my answers. 1.Find the area of the sector of a ...
trig - In a circle of radius 12 inches, a sector is formed by a central angle of...
trig - given a central angle of 66 degrees find the area of a sector in a circle...
pre-calc - Find an angle between 0 and 2ð that is coterminal with the given ...
TRIG HELP ASAP - I really need help on this problem. A sector has area of 15 in^...
trig - a. A sector that has been cut out of circular plastic sheet which has a ...
Math/Trig - Find the area of a sector of a circle with a radius of 3 m and a ...
Trigonometry - Find the area of a sector, given a central angle of 240degrees ...
Geometry - The measure of the central angle of a sector of a circle is ...
Trigonometry - Find the area of a sector, given a central angle of 240° and ...

For Further Reading

First Name:
School Subject:
Answer: