WAEC Mathematics 2013 Objective — Question 24
Question 24 of 50 from the West African Examinations Council (WAEC) Mathematics 2013 Objective paper, with the correct answer and a full explanation.
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If cos(x+40)°=0.0872, what is the value of x?
- A. 85°
- B. 75°
- C. 65°
- D. 45°Correct
Explanation
cos⁻¹0.0872 = 85°. So x+40=85, x=45°.
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