alleryযেকোনো কোণ θ-এর জন্য sin²θ + cos²θ-এর মান কত?
A1
B0
Csin 2θ
D2
Answer & Solution
Correct answer: A. 1
এটি হল Pythagorean identity, যার মান সর্বদা 1-এর সমান।
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