ABCDE is a regular n-sided polygon. If 1 |AB| = 1 |AC| + 1 |AD| , then the value of n is ____.

JEE Main Mathematics question

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is a regular -sided polygon. If , then the value of is .

Answer: 7

For a regular -gon inscribed in a circle of radius : , , . The condition becomes

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Question ID VK-008661