Given that sinθ + 2cosθ = 1, then prove that 2sinθ – cosθ = 2.

Given that sinθ + 2cosθ = 1, then prove that 2sinθ – cosθ = 2.
Given that sinθ + 2cosθ = 1, then prove that 2sinθ – cosθ = 2.
Given that sinθ + 2cosθ = 1, then prove that 2sinθ – cosθ = 2.
Given that sinθ + 2cosθ = 1, then prove that 2sinθ – cosθ = 2.

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