First we need to find x
RS = PQ
x+ 3 = 2x
collect like term
2x - x = 3
x = 3
RS= x + 3 = 3+ 3 = 6
To find the angle, we need to find n
m< S and m < R are consecutive angles, hence its sum is equal 180 degree
That is;
m< S + m< R = 180°
10n° + 8n° = 180 °
18n° = 180°
Divide both-side of the equation by 18°
n = 10
m< S = 10 n° = 10(10) = 100°
m