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किसी भी कोण θ के लिए sin²θ + cos²θ का मान क्या है?

A1
B0
Csin 2θ
D2
Answer & Solution
Correct answer: A. 1
यह पाइथागोरस सर्वसमिका है, जिसका मान सदैव 1 के बराबर होता है।
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