Question 943941
verify identities

cos^2(x)      cos(x)
------    =   ------        

1-sin(X)    sec(x)-tan(x) 

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(1-sin^2)/(1-sin) = cos/(1/cos - sin/cos)
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1+sin = cos/(1-sin)/cos
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1+sin = cos^2/(1-sin)
-----
1+sin = (1-sin^2)/(1-sin)
----
1+sin = 1+sin
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Cheers,
Stan H.