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OpenStudy (anonymous):
log2 cot 1 + log2 cot 2 + log2 cot 3 + ...... log2 cot 89 = ?
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OpenStudy (anonymous):
it is Log with base 2..
hartnn (hartnn):
ok, log2 (cot 1.cot 2.....cot 89) ok? so write cot 89 as tan 1 then tan 1 cot 1=1 go on successively doing this.....
OpenStudy (anonymous):
log2 (1) .....
OpenStudy (anonymous):
thxx.....
OpenStudy (anonymous):
nasty question. there should be some kind of summation or something rule we could use but i am drawing a blank.
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