railway RRB Technician Grade 1 Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
In ΔABC, ∠B = 90° and AB ∶ BC = 1 ∶ 2. The value of cos A + tan C is:
1
\(\frac{5+\sqrt5}{2\sqrt5}\)
2
\(\frac{1+\sqrt5}{2\sqrt5}\)
3
\(\frac{2\sqrt5}{2+\sqrt5}\)
4
\(\frac{2+\sqrt5}{2\sqrt5}\)