# Angles and Radian Measures

• Aug 21st 2008, 10:03 PM
EatDrinkKill22
Angles and Radian Measures
Would appreciate help with. Thankx.

Find the radian measure of four angles in standard position that are coterminal with the given angle in standard position.

"pi"/4

-9"pi"/7
• Aug 21st 2008, 10:23 PM
Prove It
Quote:

Originally Posted by EatDrinkKill22
Would appreciate help with. Thankx.

Find the radian measure of four angles in standard position that are coterminal with the given angle in standard position.

"pi"/4

-9"pi"/7

180 degrees = $\pi$ radians.

So 1 degree = $\frac{\pi}{180}$ radians and 1 radian = $\frac{180}{\pi}$ degrees.

Using those facts, can you see a way to make the conversions now?
• Aug 22nd 2008, 01:08 PM
skeeter
Quote:

Originally Posted by EatDrinkKill22
Would appreciate help with. Thankx.

Find the radian measure of four angles in standard position that are coterminal with the given angle in standard position.

"pi"/4

-9"pi"/7

... to find coterminal angles, just add or subtract any multiple of $2\pi$.