Sunday

November 23, 2014

November 23, 2014

Posted by **bob** on Thursday, December 8, 2011 at 10:27pm.

- pre calc -
**Steve**, Friday, December 9, 2011 at 10:58amDraw a diagram. The sides of the triangle are 12,9,5

The angle at C subtends the longest side, so it will be the largest angle.

by the law of cosines,

12^2 = 9^2 + 5^2 - 2*9*5 cosC

144 = 81 + 25 - 90 cosC

cosC = -38/90

C = 115°

**Answer this Question**

**Related Questions**

pre calc - EAch of 3 circles touch the other 2. Circle A=radius 8cm Circle B=...

Pre-Calc - Describe the conditions necessary for the two circles, where circle a...

Pre-Calc (Circles) - Describe the conditions necessary, where circle A has a ...

maths - there are two circles touching each other at one point. The radius of ...

Math - Circle C has radius 4 inches. Circle D had radius 9 inches. These two ...

math gre question - in an infinite series of circles the radius of the second ...

Geometry - A dartboard consists of five concentric circles. The radius of the ...

Geomatric series - A fractal is created: A circle is drawn with radius 8 cm. ...

GEOMETRY CIRCLES PLEASE - 1.An isosceles triangle with each leg measuring 13 cm ...

GEOMETRY CIRCLE - 1.An isosceles triangle with each leg measuring 13 cm is ...