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WAEC Further Mathematics questions: Trigonometry

16 questions with answers and explanations. Tap an option to check yourself.

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All topicsCoordinate geometry and conic sections · 16Differentiation · 18Dynamics · 15Functions and rational functions · 15Integration · 16Matrices and determinants · 16Permutations and combinations · 15Polynomials and the remainder theorem · 16Probability · 16Sequences and series · 16Sets, binary operations and logic · 16Statics · 14Statistics · 15Surds, indices and logarithms · 16The binomial theorem · 15Trigonometry · 16Vectors · 16

  1. Question 1· Trigonometry· WAEC

    Without using tables, find the value of sin 75°.

    Explanation and discussion

  2. Question 2· Trigonometry· WAEC

    Without tables, find tan 15°.

    Explanation and discussion

  4. Question 4· Trigonometry· WAEC

    Solve 2 cos θ − 1 = 0 for 0° ≤ θ ≤ 360°.

    Explanation and discussion

  7. Question 7· Trigonometry· WAEC

    In triangle ABC, a = 7 cm, b = 5 cm and C = 60°. Find c.

    Explanation and discussion

  11. Question 11· Trigonometry· WAEC

    Solve sin θ = −1/2 for 0° ≤ θ ≤ 360°.

    Explanation and discussion

  12. Question 12· Trigonometry· WAEC

    sin 2x is equal to

    Explanation and discussion

  13. Question 13· Trigonometry· WAEC

    sin 2θ is equal to

    Explanation and discussion

  14. Question 14· Trigonometry· WAEC

    Find the area of a triangle with sides 8 cm and 10 cm and included angle 30°.

    Explanation and discussion

  15. Question 15· Trigonometry· WAEC

    Express cos 2A in terms of sin A.

    Explanation and discussion

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