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JSS3: MATHEMATICS - 2ND TERM

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  1. Trigonometry I | Week 1
    3 Topics
    |
    1 Quiz
  2. Trigonometry II | Week 2
    4 Topics
    |
    1 Quiz
  3. Trigonometry III | Week 3
    5 Topics
    |
    2 Quizzes
  4. Similarity I | Week 4
    3 Topics
    |
    1 Quiz
  5. Similarity II | Week 5
    3 Topics
    |
    1 Quiz
  6. Similarity III | Week 6
    2 Topics
    |
    1 Quiz
  7. Similarity IV | Week 7
    2 Topics
    |
    1 Quiz
  8. Variation I | Week 8
    3 Topics
    |
    1 Quiz
  9. Variation II | Week 9
    2 Topics
    |
    1 Quiz
  10. Calculations Involving Standard Form | Week 10
    4 Topics
    |
    1 Quiz
  11. Compound Interest | Week 11
    4 Topics
    |
    1 Quiz

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JSS3: MATHEMATICS – 2ND TERM Trigonometry III | Week 3 Solving Right Angled Triangles with Sine and Cosine Ratio
Lesson 3, Topic 3
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Solving Right Angled Triangles with Sine and Cosine Ratio

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Topic Content:

  • Solving Right Angled Triangles with Sine and Cosine Ratio

The inverse trigonometric functions sin −1 ( θ ), cos −1 ( θ ), and tan −1 ( θ ) are used to find the unknown measure of an angle of a right triangle when two side lengths are known.

Example 3.3.1:

In ΔABC, find θ and the length ...

 

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