aussy123
Given: a = 8, b = 6, Angle C = 60
Angle A =
14°
46°
74°
106°
Delete
Share
This Question is Closed
phi
Best Response
You've already chosen the best response.
1
we could use the law of cosines to find side c, and then the law of sines to find angle A
begzat
Best Response
You've already chosen the best response.
0
i
The only angle you are given is C, so use c^2 = a^2 + b^2 - 2abcosC...now substitute
aussy123
Best Response
You've already chosen the best response.
0
Would you use the formula a^2=b^2+c^2-2bcCosA
begzat
Best Response
You've already chosen the best response.
0
yes
aussy123
Best Response
You've already chosen the best response.
0
okay thanks ill try
begzat
Best Response
You've already chosen the best response.
0
okay
phi
Best Response
You've already chosen the best response.
1
This is a 2 step problem. find side c using
\[ c^2 = a^2 + b^2 - 2\ a\ b \cos(C) \]
after you find c, you can use the Law of Sines
\[ \frac{\sin A}{a}= \frac{\sin C}{c} \]
aussy123
Best Response
You've already chosen the best response.
0
okay thanks