prove that secant square A = tan square A + 1
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there is an identity
sec^2a-tan^2a=1
when we transpose tan^2 to right side
sec^2=tan^2+1
hence proved.
^2 is called power 2
sec^2a-tan^2a=1
when we transpose tan^2 to right side
sec^2=tan^2+1
hence proved.
^2 is called power 2
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