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 :)

is half of . Take it from there?

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Originally Posted by ArcSine

is half of . Take it from there?

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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 is degrees.

Quote:

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Originally Posted by ArcSine

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 is degrees.

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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.

Quote:

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Originally Posted by ArcSine

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

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Thanks. :)