4. If two complementary angles are of measure (2x + 5)° and ( x + 10 )°, find the two angles.
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Answer:
sum of two complementary angle=90°
(2x+5+x+10)°=90°
(3x+15)°=90°
3x+15=90
3x=90-15
3x=75
x=75/3
=25
The required angles =2*25+5=50+5=55°
and 25+10=35°
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