# Worksheet: Orthogonal Matrices

In this worksheet, we will practice determining whether a matrix is orthogonal and finding its inverse if it is.

**Q1: **

Is the matrix orthogonal?

- ANo
- BYes

**Q2: **

Is the given matrix orthogonal?

- AYes
- BNo

**Q3: **

Is the matrix orthogonal?

- ANo
- BYes

**Q4: **

Is the matrix orthogonal?

- AYes
- BNo

**Q12: **

Determine whether the following matrix is orthogonal:

- A is an orthogonal matrix.
- B is not an orthogonal matrix.