Answer:
1) In this problem, the first thing we need to do is to sketch out that triangle which is down bellow
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2) Notice that, since we have a right triangle here and almost none of their angles, we can solve it by applying the Pythagorean Theorem (also down bellow.)
Note that the variable to the left in the Pythagorean Theorem is always the hypotenuse. And in that equation, the negative result for the square root of 144 is not considered for there is no negative length.
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Step-by-step explanation:
