Teaching Bihar D.El.Ed Mock Test Series 2024-25 Quantitative Aptitude Trigonometry Circular Measure of Angles

যদি cotA + cosecA = 5 এবং A একটি সূক্ষ্ম কোণ হয়, তবে cos A এর মান কত হবে?

1
12/13
2
1
3
5/12
4
5/13
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