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OpenStudy (christos):
Find exact value of (sin25 - cos65)/cos25
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hartnn (hartnn):
cos 65 = sin (90-65) =... ?
OpenStudy (christos):
=sin25
hartnn (hartnn):
so, sin 25 - cos 65 = sin 25-sin 25 =...?
OpenStudy (christos):
Zero :D
hartnn (hartnn):
correct :) and 0/ cos 25 also = 0
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