Perform each of the following operations:
1. 13^{o}48'39" + 18^{o}34'39"
2. 11^{o}23' - 6^{o}50'
Express the following without decimals.
1. 0.1^{o }2. 15.87^{o}
Here's the situation: I'm in an online math class that has absolutely no instruction. The book does not even cover half of the work we have to do. All our instructor gave us to work with is a list of definitions. Therefore, I have no clue what this question is even asking me to do. I managed to guess correctly on the top two answers but I have no idea how to figure out the bottom two. I took geometry five years ago in high school and have not worked with it since. So what have I been able to do so far? Not a thing.
Surely you know how to add! That is what the first is asking you to do- together with know that there are 60 seconds in a minute and 60 minutes in a degree.
To add $\displaystyle 13^o 45' 30''+ 20^0 25' 40''$
30"+ 40"= 70"= 60"+ 10"= 1' 10"
45'+ 25'= 70' plus that additional minute from the seconds sum is 71'. 71'= 60'+ 11'= [tex]1^o 11'
$\displaystyle 13^o+ 20^o= 33^o$ plus that additional degree from the minutes sum is $\displaystyle 34^o$.
The sum is $\displaystyle 34^o 11' 10"$
To write $\displaystyle 30.2^o$ "without a decimal", convert that "$\displaystyle .2^o$" to minutes and (if necessary) seconds.
Since there are $\displaystyle 60'$ in a degree, .2 of a degree is (0.2)(60)= 3' so $\displaystyle 30.2^o= 30^0 3'$.