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3 years ago

Y=(3/4)x-1 Is it parallel?

Mathematics

1 answer:

AVprozaik [17]3 years ago

8 0

Answer:

I don't have the answer but I do have an example

Example:

Solution: The slope of the given line, y = -4x + 5 is -4 (remember y = mx + b).

Since parallel lines have = slopes, our line has a slope of -4.

Use the point -slope form of the equation of a line: y - y1 = m(x - x1).

m = -4 (x1, y1) = (6,-3)

ANSWER: y - (-3) = -4(x - 6)

y + 3 = -4x + 24

y = -4x + 21

Hope this helps

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3 years ago

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eimsori [14]

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Half Angle Formula

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Answer:

$\cos \frac{\theta}{2}=-\sqrt[\square]{\frac{6-\sqrt[\square]{11}}{12}}$

Checking:

$\begin{gathered} \frac{\theta}{2}=\cos ^{-1}(-\sqrt[\square]{\frac{6-\sqrt[\square]{11}}{12}}) \\ \frac{\theta}{2}=118.22^{\circ} \\ \theta=236.44^{\circ}\text{ (3rd quadrant)} \end{gathered}$

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$\csc \theta=\frac{1}{\sin\theta}=\frac{1}{\sin (236.44)}=-\frac{6}{5}\text{ QED}$

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