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Find tan(x) and cos(x) in the diagram. Find sin(θ) and cos(θ) in the diagram. Find the value of Γ sin(Γ) and cos(Γ).

Mathematics

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: Find tan⁡(x)\tan(x) and cos⁡(x)\cos(x)
The diagram shows a right-angled triangle with the side opposite angle xx as 3 and the side adjacent to angle xx as 4.

  1. Find the hypotenuse.

    Using the Pythagorean theorem, a2+b2=c2a^2 + b^2 = c^2:

    32+42=c23^2 + 4^2 = c^2 9+16=c29 + 16 = c^2 25=c225 = c^2 c=25=5c = \sqrt{25} = 5

    The hypotenuse is 5.

  2. Calculate tan⁡(x)\tan(x).

    tan⁡(x)=OppositeAdjacent\tan(x) = \frac{\text{Opposite}}{\text{Adjacent}}

    tan⁡(x)=34\tan(x) = \frac{3}{4}
  3. Calculate cos⁡(x)\cos(x).

    cos⁡(x)=AdjacentHypotenuse\cos(x) = \frac{\text{Adjacent}}{\text{Hypotenuse}}

    cos⁡(x)=45\cos(x) = \frac{4}{5}

    The values are tan⁡(x)=34\boxed{\tan(x) = \frac{3}{4}} and cos⁡(x)=45\boxed{\cos(x) = \frac{4}{5}}.

    : Find sin⁡(θ)\sin(\theta) and cos⁡(θ)\cos(\theta)
    The diagram shows a right-angled triangle with the side opposite angle θ\theta as 12 and the side adjacent to angle θ\theta as 9.

  4. Find the hypotenuse.

    Using the Pythagorean theorem, a2+b2=c2a^2 + b^2 = c^2:

    122+92=c212^2 + 9^2 = c^2 144+81=c2144 + 81 = c^2 225=c2225 = c^2 c=225=15c = \sqrt{225} = 15

    The hypotenuse is 15.

  5. Calculate sin⁡(θ)\sin(\theta).

    sin⁡(θ)=OppositeHypotenuse\sin(\theta) = \frac{\text{Opposite}}{\text{Hypotenuse}}

    sin⁡(θ)=1215=45\sin(\theta) = \frac{12}{15} = \frac{4}{5}
  6. Calculate cos⁡(θ)\cos(\theta).

    cos⁡(θ)=AdjacentHypotenuse\cos(\theta) = \frac{\text{Adjacent}}{\text{Hypotenuse}}

    cos⁡(θ)=915=35\cos(\theta) = \frac{9}{15} = \frac{3}{5}

    The values are sin⁡(θ)=45\boxed{\sin(\theta) = \frac{4}{5}} and cos⁡(θ)=35\boxed{\cos(\theta) = \frac{3}{5}}.

    : Find the value of Γsin⁡(θ)\Gamma \sin(\theta) and cos⁡(θ)\cos(\theta)
    This question appears to refer to the same angle θ\theta from the second diagram, as no new diagram is provided and Γ\Gamma is an undefined constant.

  7. Use the values of sin⁡(θ)\sin(\theta) and cos⁡(θ)\cos(\theta) from .

    From , we found sin⁡(θ)=45\sin(\theta) = \frac{4}{5} and cos⁡(θ)=35\cos(\theta) = \frac{3}{5}.

  8. Calculate Γsin⁡(θ)\Gamma \sin(\theta).

    Since Γ\Gamma is an unknown constant, we express the value in terms of Γ\Gamma:

    Γsin⁡(θ)=Γ⋅45=4Γ5\Gamma \sin(\theta) = \Gamma \cdot \frac{4}{5} = \frac{4\Gamma}{5}
  9. State the value of cos⁡(θ)\cos(\theta).

    cos⁡(θ)=35\cos(\theta) = \frac{3}{5}

    The values are Γsin⁡(θ)=4Γ5\boxed{\Gamma \sin(\theta) = \frac{4\Gamma}{5}} and cos⁡(θ)=35\boxed{\cos(\theta) = \frac{3}{5}}.

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