Class 9 Math Trigonometry Trigonometric Functions
For each natural number k, let denotes the circle radius k centimeters in the counter-clockwise direction.After completing its motion on , the particle moves to in the radial direction. The motion of the particle continues in this manner. The particle starts at (1,0).If the particle crosses the the positive direction of the x-axis for first time on the circle ,then n equal to

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