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If sec θ = 17/8, then tan θ is equal to ______. - Mathematics

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Question

If `sec θ = 17/8`, then tan θ is equal to ______.

Options

  • `15/8`

  • `8/15`

  • `15/17`

  • `17/15`

MCQ
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Solution

If `sec θ = 17/8`, then tan θ is equal to `underlinebb(15/8)`.

Explanation:

`sec θ = 1/(cos θ)`

= `"Hypotenuse"/"Adjacent"` 

So, take hypotenuse = 17 and adjacent = 8.

Then opposite = `sqrt(17^2 - 8^2)`

= `sqrt(289 - 64)`

= `sqrt(225)`

= 15

Therefore, `tan θ = "Opposite"/"Adjacent"`

= `15/8`

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Chapter 17: Trigonometric Ratios - Exercise 17B [Page 361]

APPEARS IN

Nootan Mathematics [English] Class 9 ICSE
Chapter 17 Trigonometric Ratios
Exercise 17B | Q 2. | Page 361
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