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Which among the following is/are true ? ...

Which among the following is/are true ?
I. The values of cosec x repeat after an interval of `2pi.`
II. The values of sec x repeat after an interval of `2pi.`
III. The values of cot x repeat after an interval of `pi.`

A

I is true

B

II is true

C

III is true

D

All are true

Text Solution

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The correct Answer is:
D
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DISHA PUBLICATION-TRIGONOMETRIC FUNCTIONS -EXERCISE-1
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  8. If (cos A)/3= (cos B)/3 = 1/5, - pi/2 lt A lt 0 and - pi/2 lt B lt 0 ...

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  9. If tan theta + sec theta = p, then what is the value of sec theta ?

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  18. Which of the following functions has period 2pi ?

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