Homework Help: trigonometry

Posted by hw on Sunday, January 23, 2011 at 4:51pm.

using the law of sines, solve the rest of the triangle:
side C=14
side B=4
angle c=145 degrees

i got
angle b= 9.4
angle a=25.6
side A=10.4
but i didn't know if it was correct

trigonometry - Damon, Sunday, January 23, 2011 at 5:05pm
sin B/b = sin C/c
sin B = (4/14) sin 145
sin B = .1639
B = 9.42

A = 180 - B - C = 180 - 9.42 - 145 = 25.58
so you have the right idea
Angles are usually upper case, sides lower case.
trigonometry - hw, Sunday, January 23, 2011 at 5:06pm
thanks a bunch!

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