Question 909827
how do you express 
secAtanA - cscAcotA in term of sinA?
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(1/cos)(sin/cos) - (1/sin)(cos/sin)
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= sin/cos^2 - cos/sin^2
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= sin/(1-sin^2) - sqrt(1-sin^2)/sin^2
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Cheers,
Stan H.
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