Incorrect statement is

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3.Trigonometrical Ratios, Functions and Identities

easy

The incorrect statement is

A

$\sin \theta = - \frac{1}{5}$

B

$\cos \theta = 1$

C

$\sec \theta = \frac{1}{2}$

D

$\tan \theta = 20$

Solution

(c) Incorrect statement is $\sec \theta = \frac{1}{2}$, because value of $\sec \theta $ is always $ \ge 1$.

Standard 11

Mathematics

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