The answer is B maybe try it?
X=72 cause 180-(51+57) so 180-108 and the triangle is acute cause all of the angle measures are below 90 degrees.
So your answer is
x=72
Acute Triangle
An=A1+(n-1)d
-20=A1+(15-1)x-7
-20=A1+14 x -7
-20=A1-98
+98 +98
-98+98=0
-20+98=78
A1=78
<em>The measure of PQ is 12.72</em>
<h2>
Explanation:</h2>
We have the right triangle ΔPQR and we want to know the measure of PQ. PQ is opposite to ∠R, so from trigonometry we know that:

<h2>Learn more:</h2>
Right triangles: brainly.com/question/10252821
#LearnWithBrainly

so
(this is wrong because
)