Answer:
<A = 120°
Explanation:
To find m<A, the first step will be to find the m<B. To do this, we will use the law of sines. According to the law of sines,
. In the problem shown, b (the side opposite of <B) is 8, c (the side opposite of <C) is also 8, and C=30°. Now, let's plug in the values we know into the law of sines.

In this case, we don't even need to solve any further, as it's obvious that B will be equal to 30°. Now, the last step is the find m<A. To do this, we will remember that all angles of a triangle total 180°.
<A + <B + <C = 180°
<A + 30° + 30° = 180°
<A + 60° = 180°
<A = 120°
So, the measure of <A is 120°.
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