SOLUTION: Select the correct answer. An equilateral triangle B uppercase A uppercase C. Side uppercase A B is of length lowercase c equals 8 and side B uppercase C is of length lowercase a

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Question 1206093: Select the correct answer.
An equilateral triangle B uppercase A uppercase C. Side uppercase A B is of length lowercase c equals 8 and side B uppercase C is of length lowercase a equals 3. Angle at B is beta equals 57.53 degrees.
Which measurement of acute triangle ABC can you find by direct substitution of the labeled measures in the Law of Cosines?
A.
AC
B.
m∠
C.
m∠
D.
none

Found 2 solutions by ikleyn, MathLover1:
Answer by ikleyn(52893) (Show Source):
You can put this solution on YOUR website!
.

Different parts of this post do contradict each other.

As a result, this post is a full bucket of nonsense.

Answer by MathLover1(20850) (Show Source):
You can put this solution on YOUR website!

An triangle has . Your triangle is not an triangle.

In any triangle ,

given:

<
Which measurement of acute triangle can you find by direct substitution of the labeled measures in the Law of Cosines?
answer:
A.
(or side )
proof:

then you can find angles and

°
then

°