Mht CetTrigonometric Ratios And IdentitiesMHT CET 2026 17th April Morning ShiftMCQ+2 / -02026If $\cos 43^\circ + \sin 43^\circ = k^3$, then $\cos 2^\circ = \ldots$A$-\dfrac{k^3}{\sqrt{2}}$B$\dfrac{k^3}{\sqrt{2}}$C$-\dfrac{k^3}{\sqrt{3}}$D$\dfrac{k^3}{\sqrt{3}}$Check AnswerClear SelectionReveal AnswerShow Explanation