146) Find angle 'X' #maths #olympiad #geometry #class

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[nightfall]

Unless you are explicitly told all 3 sides of the triangle are equal, you are assuming it is an equilateral triangle with this solution.

[SudhanshuKumar-fyxq]

Please solve it by using cosine rule. Please😢😢😢

[terter]

But way the rotation is 60°?
If X = 180° you have a triangle?
And tis is just 3 point and x chang the relative position so you can make a triangle for every value of X