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प्रश्न
Which of the following is incorrect?
विकल्प
- \[\sin x = - \frac{1}{5}\]
cos x = 1
- \[\sec x = \frac{1}{2}\]
tan x = 20
उत्तर
`bb(sec x = 1/2)`
Explanation:
\[\sin x = - \frac{1}{5}\] is correct as \[- 1 \leq \sin x \leq 1\]
cos x = 1 is correct as cos x = 1 is correct as
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