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The value of (cos 15^(@)-sin 15^(@)) is-...

The value of `(cos 15^(@)-sin 15^(@))` is-

A

1

B

`1/2`

C

`-(1)/(sqrt2)`

D

`(1)/(sqrt2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • The value of cos15^@-sin15^@ is

    A
    0
    B
    `1/sqrt2`
    C
    `-1/sqrt2`
    D
    `1/(2sqrt2)`

  • The value of (sin 75^(@) -cos 75^(@)) is-

    A
    `(1)/(sqrt2)`
    B
    `1/2`
    C
    `-(1)/(sqrt2)`
    D
    `(1)/(2sqrt2)`

  • The value of (cos 10^(@) + sin 10^(@))/(cos 10^(@) -sin 10^(@))is-

    A
    `tan 35^(@)`
    B
    `-cot 35^(@)`
    C
    `-tan 35^(@)`
    D
    `tan55^(@)`

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