Question

triangle PQR, angleP=x, angleQ=x-40 and angler=x+10. Calculate angleQ​

Answer 1

Answer:

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Answer 2

we know that sum of all angles of triangle is 180

angle p+angle q+angle r=180

x+x+x-40+100=180

2x+30=180

2x=180-30=150

x=150/2=75

angle q=x-40=75-40=35 degrees