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seen Mar 11 '13 at 19:16

Playing with C is really fun.


Sep
24
awarded  Autobiographer
Mar
11
comment Anyone could help me with this trig question
It can't be proved, which you want because the above one is not valid for any value of angle A.
Mar
11
comment Anyone could help me with this trig question
It's not correct answer ... You have to prove something else (Ist line that OP wanted) but you proved different one