f(θ)=2cos^3 θ+sin^(2π-θ)+sin(π/2+θ)-3 / 2+2cos^(π+θ)+cos(-θ),求f(π/6)的值

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f(θ)=2cos^3θ+sin^(2π-θ)+sin(π/2+θ)-3/2+2cos^(π+θ)+cos(-θ),求f(π/6)的值f(θ)=2cos^3θ+sin^(2π-θ)+sin(π/2+θ

f(θ)=2cos^3 θ+sin^(2π-θ)+sin(π/2+θ)-3 / 2+2cos^(π+θ)+cos(-θ),求f(π/6)的值
f(θ)=2cos^3 θ+sin^(2π-θ)+sin(π/2+θ)-3 / 2+2cos^(π+θ)+cos(-θ),求f(π/6)的值

f(θ)=2cos^3 θ+sin^(2π-θ)+sin(π/2+θ)-3 / 2+2cos^(π+θ)+cos(-θ),求f(π/6)的值
f(θ)=2cos^3 θ+sin^(2π-θ)+sin(π/2+θ)-3 / 2+2cos^(π+θ)+cos(-θ),
f(π/6)=3√3/4+1/4+√3/2-3/2+3/2+√3/2
=(5√3+1)/4