Question 337018
{{{A+C=90}}}
.
.
{{{A=3*C}}}
.
.
Substitute,
{{{3C+C=90}}}
{{{4C=90}}}
{{{highlight(C=45/2)}}}degrees
.
.
.
{{{A=3(45/2)}}}
{{{highlight(A=135/2)}}}degrees