(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have to find the measures of the angles x & y.

2. Relevant equations

Sine Law

Cosine Law

3. The attempt at a solution

First thing I tried to do was find the measure of the angle @ A.

a/SinA = c/SinC

66/SinA = 25/Sin10.5

and then I end up with 28 degrees for the angle @ A. 28 degrees is obviously wrong. I'm ending up with an error and I can't understand why because so far as I understand my procedure is correct.

I want to solve for angle A, then because I already have angle C I can solve for angle B.

From angle B I could find the angle next to (x), thereby finding x becasue the sum of the two would be 180.

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# Trigonometry angle - calculation failed, can't explain.

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