Is solvable only if:

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

λcos⁡x−3sin⁡x=λ+1\lambda\cos x-3\sin x=\lambda+1 is solvable only if: (1) λ∈[0,5]\lambda\in[0,5] (2) λ∈[4,5]\lambda\in[4,5] (3) λ∈(−∞,4]\lambda\in(-\infty,4] (4) None of these

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