Appeared in: 2023 (2 sets)
(a) A function $f : A \to B$ defined as $f(x) = 2x$ is both one-one and onto. If $A = \{1, 2, 3, 4\}$, then find the set B. OR (b) Evaluate : $\sin^{-1} \left$\sin \frac{3\pi}{4}\right$ + \cos^{-1} \left$\cos \frac{3\pi}{4}\right$ + \tan^{-1} (1)$