Trigonometryeasy · Past Paper
Identify the correct relation:
Asin²θ - cos²θ = 1
Bsin²θ + cos²θ = 1
Ctan²θ + 1 = cosec²θ
D1 - sec²θ = tan²θ
✓ Correct Answer: B — sin²θ + cos²θ = 1
sin²θ + cos²θ = 1 is the fundamental Pythagorean identity.
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