Question

I have everything except for the box in the triangle

Answer 1

Given:

A right angled triangle with angle 90 degree and theta.

Required:

Find the missing angle.

Step-by-step explanation:

The sum of the angles of the triangle is 180 degree.

`\begin{gathered} \angle A+\angle B+\angle C=180^(\circ) \\ \angle A+90^(\circ)+\theta=180^(\circ) \\ \angle A=90^(\circ)-\theta \end{gathered}`

Answer:

Option B is correct.