If $q$ is a real number , then which of the following is incorrect?

sin q = - \frac{1}{5}

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cos q = 1

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sec q = \frac{1}{7}

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tan q = - 20

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Solution

The correct option is C $sec q = \frac{1}{7}$
The range of secq is $R - (- 1, + 1)$
So Option c is incorrect

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