All you need to do is pull out the common factor of 
:
You need to cross a canal and want to determine the distance across the opposite side. Since you're able to take measurements on
1 answer:
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Answer:
Step-by-step explanation:
From the isosceles-base theorem, the measure of the angles adjacent to the pair of congruent sides of the triangle are equal. Since the problem declares , the remaining unknown angles are equal (
). The sum of the interior angles of a triangle always add up to
.
Therefore:
.