हिंदी

Sectanysec{tan-1(-y3)} is equal to ____________. -

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प्रश्न

`"sec" {"tan"^-1 (-"y"/3)}` is equal to ____________.

विकल्प

  • `sqrt(9 + "y"^2)/9`

  • `sqrt(9 + "y"^2)/3`

  • `3/sqrt(9 + "y"^2)`

  • `9/sqrt(9 + "y"^2)`

MCQ
रिक्त स्थान भरें

उत्तर

`"sec" {"tan"^-1 (-"y"/3)}` is equal to `underline(sqrt(9 + "y"^2)/3)`.

Explanation:

as sec `("tan"^-1 "y"/3) = sqrt(1 + "tan"^2 ("tan"^-1 "y"/3))`

`= sqrt(1 + "y"^2/9)`

`= sqrt((9 + "y"^2)/3)`

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