Friday, 11 January 2013

Mathematics Lesson ( Unit- 304.05) Trigonometry

Arc Length and Sector Area Formulae


OBJECTIVE :
  1. Convert angular measurements
    - Define Radian
    - Convert measurements in degrees (from 0 Degree to 360 Degree) to Radian vice versa.
    - Convert multiple of  radians and vice versa.
   
 2. Deduce and use

    - The arc length formula s = rθ
    - The area of sector formula  A= 1/2 rS

 3. Apply arc length and sector area formulae to solve a range of work related problems.

Convert from degree to radian: 

 x° x ∏/ 180°

Convert from radian o degree: 

y rad x 180°/ ∏

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