state gov Haryana CET Group C Mock Test Series 2025 (New Pattern) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
যদি x = a sec θ + b tan θ এবং y = a tan θ + b sec θ হয়, তাহলে x2 - y2 নির্ণয় করো।
1
a + b
2
a2 - b2
3
\(\sqrt{a^2+b^2}\)
4
a2 + b2