P:sinθ−cosθ=2cosθ
⇒sinθ=cosθ+2cosθ
tanθ=2+1
Q:sinθ+cosθ=2sinθ⇒(2−1)sinθ=cosθ
=tanθ=2−11=2+1
Let P=θ:sinθ−cosθ=2cosθ and Q=θ:sinθ+cosθ=2sinθ, be two sets. Then
Held on 10 Apr 2016 · Verified 6 Jul 2026.
P⊂Q and Q−P=ϕ
Q⊂P
P=Q
P⊂Q
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