Enter the angle, θ, in degrees. Give the angle in the range [−90∘,90∘].

To give an angle in the range [-90°, 90°], you need to adjust the input angle to fall within this range. Here's how you can do it:

1. Start by obtaining the input angle, θ, in degrees.
2. Check if the angle is greater than 90°.
- If it is, subtract 180° from the angle. This will bring it to the negative range.
3. Check if the angle is less than -90°.
- If it is, add 180° to the angle. This will bring it to the positive range.
4. If the angle is already within the desired range, you can proceed without any adjustments.

Please note that this procedure assumes that the angle can range from -180° to 180°, and you want it to be within the smaller range of -90° to 90°.

Let me know if you have any questions or need further assistance!