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I : Principal value of cos theta = -1 is...

I : Principal value of `cos theta = -1` is `pi`
II : Principal value of `sin theta = 0` is `pi`

A

only I is true

B

only II is true

C

both I and II are true

D

neither I or II are true

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • If cot theta-tantheta=2 then the principal value of theta is

    A
    `(pi)/(4)`
    B
    `(pi)/(2)`
    C
    `(pi)/(8)`
    D
    `(3pi)/(4)`

  • The principal value of Cos^(-1)(cos""(7pi)/6) is

    A
    `(7pi)/6`
    B
    `(5pi)/3`
    C
    `(5pi)/6`
    D
    `(13pi)/6`

  • The value of (cos2 theta + i sin 2 theta)^5(sin theta+i cos theta)^4 is

    A
    `cos10 theta+i sin 10 theta`
    B
    `cos6 theta-i sin6theta`
    C
    `cos6 theta+i sin6 theta`
    D
    `cos 10 theta-i sin 10 theta`

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