The measure of two acute angles are
and
.
The triangle shown here is a right-angled triangle with measure of
,
and
. We know that the sum of angles in a triangle is
.
Hence,
90+(5x+3)+(3x-9)=180
90+8x-6=180
8x=180-84
8x=96
x=96/8
x=12
Substituting the value of x we get:
5(12)+3=60+3=

3(12)-9=36-9=

Therefore the measure of two acute angles are
and
