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saveliy_v [14]
3 years ago
10

Please help!! I have no idea!!

Mathematics
1 answer:
MAXImum [283]3 years ago
4 0
If sinα=cosß  it means that ß=90-α.  This also means that α+ß=90 so we can say:

4k-22+6k-13=90

10k-35=90

10k=125

k=12.5°

...

The above identity comes up a lot, and is one worth committing to memory for sure.

sinα=cos(90-α) or vice versa cosα=sin(90-α)
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Draw an array for the equation 5+5+5=15
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I'm not for sure if this is what you meant though sorry
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Volgvan
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3 years ago
The sevth term of a geometric sequence is 108 the eight term is 36 find the common ratio
ValentinkaMS [17]

Answer:

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>

\sf t_8=108 \\ \sf t_7=36

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3 years ago
Write the equation of a line that is perpendicular to y=3x-2 that passes trough the point (-9,5)
ElenaW [278]

\huge\boxed{y-5&=-\frac{1}{3}(x+9)}

First, we'll find the slope of the new line. The first line has a slope of 3. Take the negative reciprocal of this (Flip the numerator and denominator, then multiply by -1) to get -\frac{1}{3} for the new slope.

Then, we'll use the point-slope form to make the new equation, where m is the slope and (x_1,y_1) is a point on the line:

\begin{aligned}y-y_1&=m(x-x_1)\\y-5&=-\frac{1}{3}(x-(-9))\\y-5&=-\frac{1}{3}(x+9)\end{aligned}

3 0
2 years ago
Read 2 more answers
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