90 degress= ? radians

How is the answer pie over 2?
330 degrees = 11pie over 6
-105 degrees= -7pie over 12

Converting the angle in radians to degrees
3pie over 4 =135 degrees
pie over 2 = 90 degrees

pie over 30 = 6 degrees

-7pie over 5 =-135 degrees

I have these answers but I have no idea on how to get them..

180o = pi Radians.

Divide both sides by 2:
900 = p1/2 Radians.

OR

piRad/180Deg * 90Deg = 90pi/180=pi/2.

piRad/180Deg * 330Deg = 330pi/180=11pi/6

To convert degrees to radians, you need to use the conversion factor that 180 degrees is equal to π radians.

For the first question, 90 degrees is equal to π/2 radians. To understand why the answer is π/2, you divide 90 by 180 and then multiply the result by π:

90 degrees / 180 degrees = 1/2

1/2 * π = π/2 radians

For the second question, to convert 330 degrees to radians, you again divide by 180 and then multiply by π:

330 degrees / 180 degrees = 11/6

11/6 * π = 11π/6 radians

For the third question, to convert -105 degrees to radians, you divide by 180 and multiply by π:

-105 degrees / 180 degrees = -7/12

-7/12 * π = -7π/12 radians

For the fourth question, when you have an angle given in radians, such as 3π/4 radians, you can convert it to degrees by using the conversion factor:

3π/4 radians * (180 degrees / π radians) = 135 degrees

For the fifth question, to convert π/30 radians to degrees, you can use the same conversion factor:

π/30 radians * (180 degrees / π radians) = 6 degrees

For the sixth question, -7π/5 radians can be converted to degrees by using the conversion factor:

-7π/5 radians * (180 degrees / π radians) = -126 degrees

So, these are the steps you need to follow to convert angles from degrees to radians and vice versa.