cot^2(X)- csc^2(X)
=(1/tan(x))2 - (1/sin(x))2
=(cos(x)2-1)/sin(x)2
=-sin(x)2/sin(x)2
=-1
for all values of X for which of the following is defined, find th value of cot^2(X)- csc^2(X)
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