Wednesday

August 27, 2014

August 27, 2014

Posted by **Chris** on Sunday, February 17, 2013 at 9:36pm.

- Trig -
**bobpursley**, Sunday, February 17, 2013 at 9:40pmsides of triangle are (2+2.5),(2+3),(2.5+3)

Start with law of cosines

c^2=a^2+b^2-2abCosC

label the sides a,b, c solve for angle C

Then, use the law of sines

a/SinA=c/SinC solve for angle A

then use the fact that the sum of the angles is 180 deg, find angle B.

check angle B with the law of sines.

**Related Questions**

Math. I really don't get this question - three circles are manually tangent ...

PLEASE HELP TANGENTS AND CIRCLES PROBLEM GEOMETRY - PLEASE HELP I REALLY NEED ...

Geometry/Trigonometry - Circles with centers (2,1) and (8,9) have radii 1 and 9...

trigonometry - three circles of radie 3,4, and 5 units respectively are tangent ...

GEOMETRY(CIRCLE) - Three circles with different radii have their centers on a ...

Math - circles P and Q are externally tangent at T. Horizontal lines l and m are...

math - Two circles with radii 3cm and r cm touch each other externally. If their...

geometry - Three circles are externally tangent to one another. The radius of ...

algebra - Rectangle R is formed by joining the centers of two congruent tangent ...

Geometry - Circles and tangents - Two circles of radius 1 are externally tangent...