Curriculum
Applied Mathematics — Second Secondary
Unit 1: Statics
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Forces
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Forces — Lesson quiz
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Resolution of Forces
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Resolution of Forces — Lesson quiz
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Resultant of Coplanar Concurrent Forces
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Resultant of Coplanar Concurrent Forces — Lesson quiz
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Equilibrium of a Rigid Body under Coplanar Forces
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Equilibrium of a Rigid Body under Coplanar Forces — Lesson quiz
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Equilibrium on a Rough Horizontal Plane
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Equilibrium on a Rough Horizontal Plane — Lesson quiz
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Unit 2: Solid and Analytic Geometry
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Text lesson
Resolution of Forces
Resolution of Forces
Exact values of the trigonometric ratios
Exact values of the trigonometric ratios
- In most problems we use the following special angles
- with their exact values:
| Angle θ | sin θ | cos θ |
|---|---|---|
| 30° | 1 ÷ 2 | √3 ÷ 2 |
| 45° | √2 ÷ 2 | √2 ÷ 2 |
| 60° | √3 ÷ 2 | 1 ÷ 2 |
- It is better to keep the square roots in exact form until the end of the solution
- and
- round the answer to two decimal places if needed.
Resolution of Forces · 2 / 6