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sin36^@ sin72^@ sin108^@ sin144^@ is equ...

`sin36^@ sin72^@ sin108^@ sin144^@` is equal to:

A

`1/16`

B

`3/16`

C

`5/16`

D

none of these

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Prove that : sin 36^@ sin 72^@ sin 108^@ sin 144^@ =5/16 .

sin^-1 (1) is equal to :

Knowledge Check

  • sin^(-1)(1) is equal to :

    A
    0
    B
    `pi/6`
    C
    `pi/2`
    D
    `pi/3`

  • sin^(-1)(1/2) is equal to

    A
    0
    B
    `pi/6`
    C
    `pi/2`
    D
    `pi/3`

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