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ECAT Mathematics QUESTION #767
Question 1
\(\dfrac{\cos 11° + \sin 11°}{\cos 11° - \sin 11°} = ?\)
  • \(\tan 56°\)✔️
  • \(\sin 56°\)
  • \(\cos 56°\)
  • None
Correct Answer Explanation
Dividing numerator and denominator by \(\cos 11°\) gives \(\dfrac{1 + \tan 11°}{1 - \tan 11°} = \tan(45° + 11°) = \tan 56°\).