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Bunuel
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Pam3
I can’t understand how you getting this 4 . Please expound your working

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Since ABC is isosceles and one of the angles is 60˚, then all angles must be 60˚. Why? Because in isosceles triangle, two angles are equal. If 60˚ angle is the third angle, then 60˚ + 2x = 180˚, and x = 60˚. If one of the two angles is 60˚, then third angle is 180˚ - 2*60˚ = 60˚. The rest is easy, in equilateral triangle all sides are equal, so AC = 4.
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Bunuel

In the figure above, triangle ABC is isosceles with base AC. If x = 60˚, then AC =

(A) 2
(B) 3
(C) 4
(D) 14/3
(E) \(\sqrt{30}\)


Attachment:
2019-04-18_0910.png

If ABC = 60; and triangle ABC is an isosceles triangle with base AC -> ACB = CAB = 60 = ABC
Triangle ABC is an equilateral triangle -> AC = BC = AB = 4

IMO C
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