IN ΔABC and Δ PQR, angle B = angle p, angle C =angle Q and BC =PQ. if angle A=50° and angle angle B=75° then find angle R.
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Step-by-step explanation:
In ∆ABC
Given
/_A=50°
/_B=75°
/_A+/_B+/_C=180°(by angle sum property)
50+75+/_C=180
/_C=180-125
/_C=55
In∆PQR
Given
/_P=75°
/_Q=55°
/_P+/_Q+/_R=180°(by angle sum property)
75+55+/_R=180
/_R=180-130
/_R=50
Therefore,/_R=50°
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