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Fatima Chakrabarti
Asked: 2022-11-09T15:04:35+05:30 In:

If `sintheta=1/2a n dcostheta=-(sqrt(3))/2,`then the general value of `theta`is `(n in Z)dot`
A. `2n pi+(5pi)/6`
B. `2n pi+pi/6`
C. `2n pi+(7pi)/6`
D. `2npi+pi/4`

If `sintheta=1/2a n dcostheta=-(sqrt(3))/2,`then the general value of `theta`is `(n in Z)dot`
A. `2n pi+(5pi)/6`
B. `2n pi+pi/6`
C. `2n pi+(7pi)/6`
D. `2npi+pi/4`
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1 Answer

  1. Correct Answer – A
    `sin theta=1//2` and `cos theta=-sqrt(3)//2`
    `rArr theta` lies in the second quadrant.
    `rArr sin theta=sin 5pi//6`,
    `:. Theta=2npi+(5pi//6), n in Z`

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