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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

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • The solution of equation cos^2theta+sin theta+1=0 lies in the interval :

    A
    `(-pi/4,pi/4)`
    B
    `(pi/4,(3pi)/4)`
    C
    `((3pi)/4,(5pi)/4)`
    D
    `((5pi)/4,(7pi)/4)`

  • The solution of the equation cos^2 thet a + sintheta + 1 = 0 , lies in the interval

    A
    `(- pi/4, pi/4)`
    B
    `(pi/4, (3pi)/4)`
    C
    `((3pi)/4, (5pi)/4)`
    D
    `((5pi)/4, (7pi)/4)`

  • One root of the equation "cos" theta-theta + (1)/(2) = 0 lies in the interval

    A
    `(0, pi//2)`
    B
    `(-pi//2, 0)`
    C
    `(pi//2, pi)`
    D
    `(pi, 3 pi//2)`

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