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1-tan^(2)45^(@)=....

`1-tan^(2)45^(@)=___.`

Text Solution

Verified by Experts

The correct Answer is:
1, `(4)/(3)`, `2cos^(2)45^(@)-1`, 1
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Knowledge Check

  • (2 tan 30^(@))/( 1-tan ^(2) 30^(@)) =

    A
    `cos 60^(@) `
    B
    ` sin 60^(@) `
    C
    ` tan 60^(@) `
    D
    ` sin 30 ^(@) `

  • The value of (2 tan 30^(@))/( 1 - tan ^(2) 30^(@)) is equal to

    A
    `cos 60^(@)`
    B
    `sin 60^(@)`
    C
    `tan 60^(@)`
    D
    `sin 30^(@)`

  • (tan45^(@)+cot45^(@))+sec^(2)45^(@)= ………….

    A
    1
    B
    2
    C
    4
    D
    3

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    (tan45^(@)+cot45^(@))+(sec45^(@)cosec45^(@)) is …………………

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