Trigonometryhard · Past Paper
If x sin³θ + y cos³θ = sin θ cos θ and x sin θ = y cos θ, then x² + y² is:
A0
B1
C2
D4
✓ Correct Answer: B — 1
Substituting y cos θ for x sin θ in the first equation leads to x² + y² = 1.
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