Let θ and ϕ be an acute angle such that sin θ = \(\frac{1}{\sqrt2}\) and cos ϕ = \(\frac{1}{3}\), the value of θ + ϕ is:
1
\(\left( {\frac{{5\pi }}{{12}},\frac{{3\pi }}{4}} \right)\)
2
\(\left( {\frac{{7\pi }}{{12}},\frac{{3\pi }}{4}} \right)\)
3
\(\left( {\frac{{\pi }}{{6}},\frac{{\pi }}{2}} \right)\)
4
\(\left( {\frac{{\pi }}{{3}},\frac{{\pi }}{2}} \right)\)