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what is the format of article writing?
format of diary entry
formula for sin-1X + sin-1Y , sin-1X -sin-1Y
cos-1X + cos-1Y
cos-1X - cos-1Y
summary of the last lesson
prove that :
tan [pi/4 + 1/2 cos-1 a/b] + tan[pi/4 - 1/2cos-1 a/b] = 2b/a
how to integrate
f (log(sin x ))dx
what is integral of log(x)??????
find the value of x : sin-1x + sin-1(1-x) = cos-1x
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