2The difference between the two acute angles of a right angled triangl

1.	2The difference between the two acute angles of a right angled triangle isradians. Thenthe angles are11 80.1081°, 9。3) 70°,204) 609,30°
Answer» Use sum of the two acute angles in rt tr is 90 deg i.e. pi/2 so if the two angles are 'x' and 'y' then x + y = pi/2 ( = 90 deg)and x - y = 2 pi/5 (= 72 deg) Now solve them and get that x = 81 deg and y = 9 deg cannot understand answer y 72deg

2The difference between the two acute angles of a right angled triangle isradians. Thenthe angles are11 80.1081°, 9。3) 70°,204) 609,30°

Answer»

Use sum of the two acute angles in rt tr is 90 deg i.e. pi/2

so if the two angles are 'x' and 'y' then

x + y = pi/2 ( = 90 deg)and

x - y = 2 pi/5 (= 72 deg)

Now solve them and get that x = 81 deg and y = 9 deg

cannot understand answer

y 72deg