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Choose the statement which is equivalent to sin(x)+cos(x)=0

Tan(x)=1
Tan(x)=-1
Cot(x)=1
Tan(x)=0

1 Answer

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\sin(x) + \cos(x) = 0 \\ \Leftrightarrow \sin(x) = - \cos(x) \\ \Leftrightarrow ( \sin(x) )/( \cos(x) ) = - 1\Leftrightarrow \tan(x) = - 1

User Emmanuelguther
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