Question

X°=5a-11 y°=4a+5
x dan y saling berpenyiku
x° + y° = 90°

Answer 1

x° + y° = 90°
5a-11+4a+5 = 90
9a-6 = 90
9a = 90+6
9a = 96
a = 10,67

jadi
x = 5.10,67-11 = 42,33
y = 4.10,67+5 = 47,68