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Bezzdna [24]
3 years ago
9

Write the ratios for sin X and cos X.

Mathematics
1 answer:
AfilCa [17]3 years ago
8 0

Answer: First Option

sin(X)=\frac{\sqrt{119}}{12},  cos(X)=\frac{5}{12}

Step-by-step explanation:

We know that the sine function is defined as:

sin(x)=\frac{Opposite}{Hypotenuse}

In the same way the cosine function is defined as:

cos(x)=\frac{adjacent}{Hypotenuse}

Therefore it is fulfilled that:

Opposite: is the length of the side opposite angle

Adjacent: It is the length of the side that contains the angle of 90 ° and angle  

Hypotenuse: It is the length of the side opposite the angle of 90 °

So for angle X:

Opposite=\sqrt{119}

Adjacent=5

Hypotenuse=12

Finally:

sin(X)=\frac{\sqrt{119}}{12}

cos(X)=\frac{5}{12}

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Step-by-step explanation:

Given equations are:

3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2

There are three methods to solve simultaneous equations

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