Trigonometryhard · Past Paper
The expression (cos 11 + sin 11) / (cos 11 - sin 11) is:
Atan 34
Btan 56
Ctan 45
Dtan 11
✓ Correct Answer: B — tan 56
Dividing by cos 11 gives (1 + tan 11)/(1 - tan 11) = tan(45 + 11) = tan 56.
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