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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 I | Week 1 Finding the Tangent by Drawing and Measurement
Lesson 1, Topic 2
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Finding the Tangent by Drawing and Measurement

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Topic Content:

  • Finding the Tangent by Drawing and Measurement

Example 1.2.1:

By drawing and measurements find the size of the angles to the nearest degree whose tangents are: 

(a) \( \frac{3}{5} \)

(b) \( \frac{3}{8} \)

(c)   \( \frac{7}{20} \)

Solution

(a) \( \frac{3}{5} \)

Tan θ = \( \frac{3}{5} \)means opposite is 3 cm and adjacent is 5 cm 

The lengths of the opposite and adjacent are ...

 

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