Mathematics · Progression

Find the first four terms of the sequence given by an = cos(nπ2) for n = 1, 2, 3, 4.

Verified Solution4 OptionsUpdated: October 2026👁️1 View

11, 0, 1/2, 1
21, 0, -1/2, 1/2
30, -1, 0, 1✓
41, 0, -1, 0

Correct answer

0, -1, 0, 1

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