Which of the following in an identity?
a. sin^2(x)sec^2(x)+1=tan^2(x)csc^2(x)
b. (csc(...
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Mathematics, 26.08.2019 12:30 amelie1010
Which of the following in an identity?
a. sin^2(x)sec^2(x)+1=tan^2(x)csc^2(x)
b. (csc(x)+cot(x))^2=1
c. sin^2(x)-cos^2(x)=1
d. csc^2(x)+cot^2(x)=1
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