SOLUTION: prove that coso-1 coso+1 --------- + --------- =2[1+tano] seco+tano seco-tano pls zero there means theta

SOLUTION: prove that coso-1 coso+1 --------- + --------- =2[1+tano] seco+tano seco-tano pls zero there means theta

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Question 13630: prove that
coso-1 coso+1
--------- + --------- =2[1+tano]
seco+tano seco-tano
pls zero there means theta

Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!

multiply both terms by LCF, giving

multiply these out, collect terms, cancel others, remember secA is 1/cosA... you will get 2+2tanA...the answer.

jon.

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