A) \[\sin \theta =-\frac{1}{5}\]
B) \[\cos \theta =1\]
C) \[\sec \theta =\frac{1}{2}\]
D) \[\tan \theta =20\]
Correct Answer: C
Solution :
Incorrect statement is \[\sec \theta =\frac{1}{2}\], because value of \[\sec \theta \] is always \[\ge 1\].
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