Well it says use the half angle formula to determine the exact values

and one question says 112degrees 30'

and the answer it converts it to 225 degrees
how does that happen I don't get how it turns to 225 degrees

or how do you do this?

help pleaseee :)

112^o30' is half of 225^o . Take it from there?

112^o30' is half of 225^o . Take it from there?

iknow it is but like how?i don't understnd that part like how is it half of 225 degrees

Remember that in DMS format (degrees-minutes-seconds), one degree is made up of 60 minutes, and one minute is made up of 60 seconds--just like the relationship between the familiar units of time: hours, minutes, seconds.

So 30' is half of one degree; hence 112^o30' is 112\ \frac{1}{2} degrees.

Remember that in DMS format (degrees-minutes-seconds), one degree is made up of 60 minutes, and one minute is made up of 60 seconds--just like the relationship between the familiar units of time: hours, minutes, seconds.

So 30' is half of one degree; hence 112^o30' is 112\ \frac{1}{2} degrees.

OK so then if i had 157 degrees30' would it be 314 degrees?

157 degrees 30 minutes is 157.5 degrees, which is half of 315 degrees.

157 degrees 30 minutes is 157.5 degrees, which is half of 315 degrees.

Thanks. :)