If 4sin2θ−1=0 and angle θ is less than 90∘, find the value of θ and hence the value of cos2θ+tan2θ.

If 4sin2θ−1=0 and angle θ is less than 90∘, find the value of θ

1.	If 4sin2θ−1=0 and angle θ is less than 90∘, find the value of θ and hence the value of cos2θ+tan2θ.
Answer» If $4 {sin}^{2} θ - 1 = 0$ and angle θ is less than $90^{\circ}$ , find the value of θ and hence the value of ${cos}^{2} θ + {tan}^{2} θ$ .