Question

two angles of a triangle are 54 and 72 .find the ratio of size of the third angle to the sum of the first two.

Answer 1

hey mate sum of angles of a triangle is 180.
so the third angle here will be
180-(54+72) that is 54.
ratio=
$\frac{54}{126} = \frac{3}{7}$
so ratio is 3:7

Answer 2

hii

given two angles are 54 and 72

so third will be 180 - (54+72) = 54 (angle sum property)

hence the ratio of the third angle to the sum of these two is _

54/ 126 = 3:7