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B . 45°
Step-by-step explanation:
from the given figure in traingle PQS, angle PSQ +angle QPS = 11O°
(from exterior angle property of a triangle)
we know that the sum of all the angles of a triangle is 180°
so angle PSQ + angle QPS + angle PQS = 180°
110 + PQS = 180 - 110
.PQS = 70
now consider the right triangle PRS
angle PSQ = X + 25 (from exterior angle property of the triangle)
X = 70 - 25
> X = 45°
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