Question 224860
Since it is a right triangle, we alrady know that one angle is 90 degrees.
The relation between our other angles is:
{{{A=2B-9}}}
So, the sum of the angles ina triangle is 180.
So:
{{{A+B+90=180}}}
Or, move the 90 over:
{{{A+B=90}}}
Plug in the relation we derived:
{{{2B-9+B=90}}}
We can combine like terms:
{{{3B-9=90}}}
Add 9 to both sides:
{{{3B=99}}}
Divide by 3:
{{{B=33}}}

So, The second angle is 33.


To check, we can determine the first angle is:
{{{2*33-9=57}}}
and the sum of the two angles gives us 90.