Answer:
Step-by-step explanation:
Para resolver este problea podemos comenzar con las identidades pares e impares, las cuales nos dicen que:
sen(-u)=-sen(u)
por lo que podemos reescribir nuestro problema como:
sen(-45°)=-sen(45°)
Luego podemos tomar los triángulos comunes (ver imagen adjunta).
y calcular la razón de seno en donde:
para obtener:
ahora podemos racionalizar la fracción para obtener:
Answer:
2.5ft
Step-by-step explanation:
d=2r
r=1/2d
r=1/2*5ft=2.5 ft
Answer:
12x - 1
Step-by-step explanation:
Distribute the 2 and 3:
2(3x - 5) + 3(2x + 3)
(6x - 10) + (6x + 9)
Add like terms:
12x - 1
So, the answer is 12x - 1
<u>Understanding:</u>
This can be easily solved by using the distance formula which is
distance
coordinates of the first point, in our case it is 
coordinates of the second point, 
<u>Solution:</u>
<u></u>![d=\sqrt{[(4)-(1)]^{2}+[(-1)-(-5)]^2}\\=\sqrt{(3)^2+(4)^2}\\= \sqrt{9+16} \\=\sqrt{25}\\= 5](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%5B%284%29-%281%29%5D%5E%7B2%7D%2B%5B%28-1%29-%28-5%29%5D%5E2%7D%5C%5C%3D%5Csqrt%7B%283%29%5E2%2B%284%29%5E2%7D%5C%5C%3D%20%20%5Csqrt%7B9%2B16%7D%20%5C%5C%3D%5Csqrt%7B25%7D%5C%5C%3D%205)
<u></u>
The distance between the two points is 5.
