Identity: sin²θ + cos²θ = ?
A1
B0
C2
D−1
Answer & Solution
Correct answer: A. 1
1. Fundamental Pythagorean identity in trigonometry.
2. Always equal to 1 for any real θ.
_Source: TSICET 2024 PYQ Q.116 (Shift 1, Trigonometry)_
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