The area of an isosceles triangle is 4 square unit. If the

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The area of an isosceles triangle is 4 square unit. If the length of the third side is 2 unit, the length of each equal side is

Using Rule 1,

Let, AB = AC = x units
BD = DC = 1 unit [∵ BC = 2 units]
Now, AD = √AB² - BD²
= √x² - 1

∴	1	× BC × AD = 4
	2

⇒	1	× 2 × √x² - 1 = 4
	2

⇒ √x² - 1 = 4
⇒ x² – 1 = 16
⇒ x² = 17
⇒ x = √17units