If $${\text{sin}}\left( {{{90}^ \circ } - \theta } \right)$$+ $${\text{cos}}\theta $$= $$\sqrt 2 {\text{cos}}\left( {{{90}^ \circ } - \theta } \right){\text{,}}$$then the value of $${\text{cosec}}\theta $$is?

• A. $\frac{1}{{\sqrt 3 }}$$
• B. $\frac{2}{3}$$
• C. $\sqrt {\frac{3}{2}} $$
• D. $\frac{1}{{\sqrt 2 }}$$