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Over a full period 0 to 2π, the cosine curve and the x-axis bound a total area of
A1 sq unit
B4 sq units
C0 sq units
D2 sq units
Answer & Solution
Correct answer: B. 4 sq units
The three portions have areas 1, 2 and 1 by splitting at the zeros of cos x, so the total is 4.
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