Question 379100
{{{S+C=214}}}
.
.
{{{A+S=180}}}
{{{A+C=90}}}
Add those two together,
{{{A+S+A+C=270}}}
{{{2A+S+C=270}}}
From above,
{{{S+C=214}}}
Substitute,
{{{2A+214=270}}}
{{{2A=56}}}
{{{A=28}}}degrees