Simple Math Working Models

3216 Words Jun 17th, 2012 13 Pages
You Can prove that radius to the point of contact of a tangent is perpendicular by

Take two Iron Rings with a radius of a pin that you have like a stitching needle.. The iron rings should be at a thickness of 1 cm... Join the two rings by superimposing but not exactly, without gap. just leave a gap between the two circumference of the circle such that there is parallel gap throughout the two rings then join them at two points{one at any where and another at straight opp to the other} using m~seal. no find the center by drawing a circle with same radius with compass.(no need to measure the radius just estimate the radius by having the ring)then keep the rings on it and then take a wire make it as the diameter with the contact points as
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To place a number of marks or stations in any given direction the horizontal plates are clamped together, the telescope pointed in the desired direction and then moved vertically and focused on each mark as required.

Although the theodolite looks like a difficult instrument to use, its basic concept is very simple. The surveyor would begin by picking a distinct point in the distance. After centering the theodolite over the primary point of interest, the surveyor would use the eye piece to align the sight axis with the point of interest in the distance. Next the surveyor would zero the horizontal and vertical axes graduated circles. Finally the surveyor would move the sight axis using the eye piece to the final point of interest and determine the horizontal and vertical angles between the points. With this known angle and the triangulation principle, the distance between each of the three points may be determined.

See, told you that if you understand it is quite easy to use. One major difference between the clinometers and theodolite is that theodolite is used in professional using ( NOT THIS ONE ::: THIS ONE IS HOMEMADE). THEY USE THE DIGITAL ONES |
U can go for anything.

1) Make use of thin sticks or Straws. Have papers cutting fix between two sticks to show angle. Decorate it according to yourself.

2) since you are in 10(C.B.S.E) your study of Trigonometry is concerned to 2-D only . even then you can try 3-d. Following is a description:
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