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In which of the following interval, the ...

In which of the following interval, the equation `cos ^(2) x+ sin x+1=0` has one solution ?

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
C
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