Given:
A right angled triangle with angle 90 degree and theta.
Required:
Find the missing angle.
Explanation:
The sum of the angles of the triangle is 180 degree.
[tex]\begin{gathered} \angle A+\angle B+\angle C=180^{\circ} \\ \angle A+90^{\circ}+\theta=180^{\circ} \\ \angle A=90^{\circ}-\theta \end{gathered}[/tex]
Answer:
Option B is correct.
