if f(X)=sin 2 θ+4cos(X+ θ ).sinX.sin θ +cos(2X+2 θ ) then find the value of f 2 (x)+f 2 ( π/4-X).

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if f(X)=sin 2 θ+4cos(X+ θ ).sinX.sin θ +cos(2X+2 θ ) then find the value of f 2 (x)+f 2 ( π/4-X).

if f(X)=sin²θ+4cos(X+θ).sinX.sinθ+cos(2X+2θ) then find the value of f²(x)+f²(π/4-X).

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if f(X)=sin 2 θ+4cos(X+ θ ).sinX.sin θ +cos(2X+2 θ ) then find the value of f 2 (x)+f 2 ( π/4-X).

if f(X)=sin2θ+4cos(X+θ).sinX.sinθ+cos(2X+2θ) then find the value of f2(x)+f2(π/4-X).

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if f(X)=sin²θ+4cos(X+θ).sinX.sinθ+cos(2X+2θ) then find the value of f²(x)+f²(π/4-X).