If the sum and difference of two angles are (22 / 9) radian

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If the sum and difference of two angles are (22 / 9) radian and 36° respectively, then the value of smaller angle in degree taking the value of π as (22 / 7) is :

Using Rule 1,
∵ π radian = 180°

∴		22	radian =	180	×	22
		9		π		9

∴		180	×	22 × 7	= 140° ....(i)
		22		9

According to the question,
A + B =140°
and, A – B = 36° ....(ii)
On adding,

2A = 176° ⇒ A =	176	= 88°
	2

From equation (i),
∴ 88° + B = 140°
⇒ B = 140° – 88° = 52°