railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
x = a sec θ + b tan θ மற்றும் y = a tan θ + b sec θ எனில், x 2 - y 2 ஐக் கண்டறியவும்.
1
a + b
2
a 2 - b 2
3
\(\sqrt {{a^2} + {b^2}}\)
4
a 2 + b 2