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swat32
4 years ago
8

Question18 (5pt)!!!!!!!!!!

Mathematics
1 answer:
Kaylis [27]4 years ago
7 0

sin θ = $\frac{-\sqrt{33} }{7}

tan θ = $\frac{-\sqrt{33}}{4}

<u>Step-by-step explanation:</u>

It is given that, cos θ = $\frac{4}{7}  then csc θ < 0, which implies that the θ is in the quadrant IV. Since cos θ is $\frac{adj}{hyp} , we need to find the opposite side x.

Using the Pythogarus theorem, we can find the sin and the tan θ as,

7² = 4² + x²

x² = 7² - 4²

x² = 49 - 16

x² = 33

Taking sqrt on both sides, we will get,

x = \sqrt{33}

Using the value of x, we can write the sine and tan ratio as,

sin θ = $\frac{opp}{hyp} = $\frac{-\sqrt{33} }{7}

tan θ =$\frac{opp}{adj} = $\frac{-\sqrt{33}}{4}

Thus we have obtained the values of sin θ and tan θ

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7 0
4 years ago
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We can use the two point form to find the answer:
y1 - y2 = m(x1 - x2)
Where y1 is the y coordinate(coordinate on the right hand side of (-9)) of the of the first coordinates, and y2 is the y coordinates of the second coordinates given (0).

While x1(-9) and x2(-6) are the x-coordinates(left hand side of the coordinates) of the coordinates given seperately.

m is the slope of the two points, and the formula is:
\frac{y1 - y2}{x1 - x2}
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\frac{ - 9 - ( 0)}{ - 9 - (-6)} \\ = \frac{ - 9 }{ - 9 + 6 } \\ = \frac{ - 9}{ -3 } \\ = 3

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Therefore the answer is y= 18+3x.

Hope it helps!
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