railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि x = a sec θ + b tan θ और y = a tan θ + b sec θ है, तो x2 - y2 ज्ञात करें।
1
a + b
2
a2 – b2
3
\(\sqrt {{a^2} + {b^2}}\)
4
a2 + b2