Question

Afla masurile a doua unghiuri ,ce au suma masurilor 90 grade,stiind ca $\frac{4}{9}$ din masura uneia reprezintacit dublu a $\frac{2}{3}$ din masura celuilalt

Answer 1

dublu 2/3 = 2×2/3=4/3 din masura celuilalt
a+b=90
4a/9=4b/3
4a=12b
a=3b
3b+b=90
b=90:4
b=22⁰30'
a=90-22⁰30'=67⁰30'