I am not sure how this work but are you able to describe to me just briefly how you came up those answer? I am not sure what is free on this web site and what is not.

a. that's just a straight tan calculation with your calculator

b. you have to convert minutes into degrees by dividing the minutes by 60 and then take the sine

c. that's just a straight cosine calculation with your calculator

d. you have to convert minutes and seconds into degrees by dividing the seconds by 60 to get minutes and then dividing the minutes by 60 to get degrees

e. use your calculator

f. convert minutes into degrees and then use your calculator