Trigonometrymedium · Past Paper
Evaluate (1 - tan^2 45) / (1 + tan^2 45).
A1
B0
Csin 45
Dcos 45
✓ Correct Answer: B — 0
tan 45 = 1. So, (1-1^2)/(1+1^2) = 0/2 = 0.
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