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briancastrodiaz10
22.10.2020 •
Mathematics
URGENT PLEASE
At a poster shop, Han paid $15 for 2 large posters and 1 small posters of his
favorite band. Kiran paid $18 for 1 large poster and 4 small posters of his
favorite TV shows. Posters of the same size have the same price.
Find the price of a large poster, x, and the price of a small poster, y.
Solved
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Ответ:
Option (1). Sin(b°) =![\frac{3}{5}](/tpl/images/0670/3615/62d38.png)
Step-by-step explanation:
In a triangle JKL, tan(b°) =
and cos (b°) = ![\frac{4}{5}](/tpl/images/0670/3615/96611.png)
If ΔJKL is dilated by a scale factor of
, angles will remain unchanged.
Triangle formed after dilation will be similar to triangle JKL.
Since, tan(b°) =![\frac{\text{Sinb}}{\text{Cosb}}](/tpl/images/0670/3615/9f58a.png)
Therefore,![\frac{3}{4}=\frac{sinb}{\frac{4}{5}}](/tpl/images/0670/3615/11b58.png)
Sin(b°) =![\frac{3}{4}\times \frac{4}{5}](/tpl/images/0670/3615/510d8.png)
Sin(b°) =![\frac{3}{5}](/tpl/images/0670/3615/62d38.png)
Option (1). Sin(b°) =
will be the answer.