They are 1st one is vertical angles, second one is complementary
now, the hypotenuse is just a radius unit, so, is never negative, so, the fraction is negative because the numerator is negative, that is, the adjacent side is -3.
now, let's use the pythagorean theorem to find the opposite side.
ok... so, which is it? the +/-? well, we also know that <span>sin(t) >0, namely that the sine of the angle is positive, so, then is +4 then.
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<u>Answer:</u>
<h2>12 ft</h2>
<u>Explanation:</u>
we will use pythagoras theorem
a² + b² = c²
according to the given data we'll assume that
a = 5
c = 13
5²+b²=13²
25+b²=169
b²=169-25
b²=144
b=√144
b=12