question_answer

Find the value \[\text{si}{{\text{n}}^{\text{2}}}\text{3}0{}^\circ \text{co}{{\text{s}}^{\text{2}}}\text{45}{}^\circ +\text{4ta}{{\text{n}}^{\text{2}}}\text{3}0{}^\circ \]\[+\frac{1}{2}{{\sin }^{2}}{{90}^{o}}-2{{\cos }^{2}}{{90}^{o}}+\frac{1}{24}\]

A)  1                                            

B)  2   

C)  \[\sqrt{2}\]       

D)         \[\sqrt{3}\]