railway RRB Technician Grade 1 Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

Δ ABC একটি সমকোণী ত্রিভুজ। ∠A = 90 ডিগ্রি, AB = 4 সেমি, BC = 5 সেমি। cos B + cot C এর মান কত?

1
17/20
2
29/20
3
23/20
4
31/20
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