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Mathematics

If 24 cot θ = 7, then sin θ is equal to:

  1. (247)\Big(\dfrac{24}{7}\Big)

  2. (2425)\Big(\dfrac{24}{25}\Big)

  3. (725)\Big(\dfrac{7}{25}\Big)

  4. (2524)\Big(\dfrac{25}{24}\Big)

Trigonometric Identities

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Answer

Given,

24 cot θ = 7

cot θ = 724=adjacentopposite\dfrac{7}{24} = \dfrac{\text{adjacent}}{\text{opposite}}

We know that,

Hypotenuse=opposite2+adjacent2=(24)2+(7)2=576+49=625=25.\Rightarrow \text{Hypotenuse} = \sqrt{\text{opposite}^2 + \text{adjacent}^2 } \\[1em] = \sqrt{(24)^2 + (7)^2} \\[1em] = \sqrt{576 + 49} \\[1em] = \sqrt{625} \\[1em] = 25.

Now,

sin θ = oppositehypotenuse=2425\dfrac{\text{opposite}}{\text{hypotenuse}} = \dfrac{24}{25}

Hence, option 2 is the correct option.

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