Solution of Triangle

Triangle Diagram

Step1: Find the distance between points P and R
Formula: √(x-x)²+(y-y)²
√(3-4)²+(-2-3)²=√26

Step2: Do the same for all points
Distance PR=√26
Distance RQ=√8
DistancePQ=√50

Step3:Use cosine rule to find angle P
Formula: a²+b²-2abcos∠P=c²
where a:√26 , b:√50 , c:√8

FINAL ANSWER:  19.44º

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