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Grade: 11
        Polar coordinate of vertices of a triangle are O(0,0), A(3,π/2) ,B(3,π/6) , then this triangle is a equilateral triangle.Explain????
one year ago

Answers : (1)

npcyh
26 Points
							
see the slopes of lines and then find angle between them. if all the three are 60degree then equilateral
one year ago
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