How to turn the motor 90 degrees without calculating speed and time ratio Pro Preview

This command has four input parameters:

1. The speed at which the motor turns;
2. How many degrees the motor should turn at;
3. What type of brake it should use;
4. Whether or not the program should wait for the command to complete its action.

Here's an example of how the robot can be programmed to move a single motor to 90 degrees with a speed of 360:

Motor(Port.B).run_angle(360, 90)

If we wish to turn the motor in reverse, we can use one of two options:

1. Set it to a negative speed:

   Motor(Port.B).run_angle(-360, 90)

2. Set it to a negative angle:

   Motor(Port.B).run_angle(360, -90)

If you set a negative angle and negative speed, the motor will reverse its direction twice and it will move forward:

Motor(Port.B).run_angle(-360, -90)

You can follow this link to read about this command in the pybricks documentation.