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The solution of the equation cos^2theta+...

The solution of the equation `cos^2theta+sintheta+1=0` lies in the interval

A

`(-pi//4, pi//4)`

B

`(pi//4, 3pi//4)`

C

`(3 pi//4, 5pi//4)`

D

`(5 pi//4, 7 pi//4)`

Text Solution

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The correct Answer is:
D
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