SOLUTION: What is the measure of each base angle of an isosceles triangle if its vertex angle measures 30 degrees and its 2 congruent sides measure 19 units?

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Question 949549: What is the measure of each base angle of an isosceles triangle if its vertex angle measures 30 degrees and its 2 congruent sides measure 19 units?
Answer by MathLover1(20849) About Me  (Show Source):
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What is the measure of each base angle of an isosceles triangle if its vertex angle measures 30+ degrees and its 2 congruent sides measure 19 units?
the base angles of an isosceles triangle are same
if base angles are alpha then 2alpha=180-30=>2alpha=150alpha=150%2F2=>alpha=75
so, the measure of each base angle of an isosceles triangle is 75 degrees