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If cos A=3/4 then the value of sin(A/2)...

If `cos A=3/4` then the value of `sin(A/2) sin((5A)/2)` is

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If cos A=3/4 then the value of 2 sin(A/2) sin((5A)/2) is.............. A) (sqrt11)/(16) B) -(sqrt11)/(16) C) (11)/(16) D) -(11)/(16)

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Knowledge Check

  • If cos A =3/4 then, the value of sin ""A/2sin ""(5A)/(2) is-

    A
    `1/32`
    B
    `11/32`
    C
    `11/16`
    D
    `9/32`

  • If cosA=3//4 , then the value of 16cos^(2)(A//2)-32sin(A//2) sin (5A//2) is

    A
    `-4`
    B
    `-3`
    C
    3
    D
    4

  • If cos A = 3//4 . then what is the value of sin ((A)/(2))sin((3A)/(2)) ?

    A
    `5//8`
    B
    `5//16`
    C
    `5//24`
    D
    `7//32`

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    If 3 sin A+5 cos A =5, then the value of (3 cos A-5 sin A )^(2) is................. A) 4 B) 5 C) 2 D) 9

    If 3 sin A+5 cos A =5, then the value of (3 cos A-5 sin A )^(2) is

    If x = 4 cos A + 5 sin A and y = 4 sin A - 5 cos A, then the value of x^(2) + y^(2) is:

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