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Post-UTME Mathematics 2016 Objective — Question 55

Question 55 of 60 from the Post-UTME Screening (Post-UTME) Mathematics 2016 Objective paper, with the correct answer and a full explanation.

Trigonometry 5. sin(x - π/2) = ?

A. sin x
B. -sin x
C. cos x
D. -cos xCorrect

Explanation

Using the angle subtraction identity, sin(x-π/2) = -cos x.

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