If cos θ + sin θ = 2 cos θ, show that cos θ − sin θ = 2 sin θ.

1.	If cos θ + sin θ = 2 cos θ, show that cos θ − sin θ = 2 sin θ.
Answer» If cos θ + sin θ = $\sqrt{2}$ cos θ, show that cos θ − sin θ = $\sqrt{2}$ sin θ.

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