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Thursday, 05 March 2026
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If sine x equals cosine x, what is x in radians?

If sine x equals cosine x, what is x in radians?
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  • A \(\frac{\pi}{2}\)
  • B \(\frac{\pi}{3}\)
  • C \(\frac{\pi}{4}\)
  • D \(\frac{\pi}{6}\)
  • E \(\frac{\pi}{12}\)
Correct Answer: Option C
Explanation:
\(\sin x = \cos x\)
\(\implies x = 45°\)
In radians, \(x = \frac{\pi}{4}\).

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