A

3

B

5

C

7

D

2

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Updated: 9 hours ago

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যদি cotθ = 1 হয়, তবে sinθ - cos(- θ) = কত?

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x2 - 2ax + (a + b)(a - b) এর উৎপাদক বিশ্লেষণ কোনটি?

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