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Find the least value of 2 sin^(2) theta+...

Find the least value of `2 sin^(2) theta+ 3 cos^(2) theta`.

A

1

B

2

C

3

D

5

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The least value of 2sin^2theta+3cos^2theta is

    A
    1
    B
    2
    C
    3
    D
    5

  • The least value of 3sin^2theta+4cos^2theta is:

    A
    1
    B
    2
    C
    3
    D
    5

  • If 5sin^(2)theta+3cos^(2)theta=4 . Find the value of sin theta and cos theta :

    A
    `pm(1)/(sqrt2), pm(1)/(sqrt2)`
    B
    `pm(sqrt3)/(2),pmsqrt2`
    C
    `(sqrt3)/(2),(1)/(sqrt2)`
    D
    none of these

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    The least value of cos^(2) theta - 6 sin theta cos theta + sin^(2) theta + 2 is

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