Before you work through this module, you should have completed Module 1-1, Nature and
Properties of Light. In addition, you should be able to manipulate and use algebraic formulas,
deal with units, understand the geometry of circles and triangles, and use the basic trigonometric
functions (sin, cos, tan) as they apply to the relationships of sides and angles in right triangles.
Before you work through this module, you should have completed Module 1-1, Nature andProperties of Light. In addition, you should be able to manipulate and use algebraic formulas,deal with units, understand the geometry of circles and triangles, and use the basic trigonometricfunctions (sin, cos, tan) as they apply to the relationships of sides and angles in right triangles.
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