x=3y
Switch sides
3y=X
Divide 3 both sides to get
T= x/3
For cos(2x) * (2cos(x) + 1) = 0, use the double angle identity for cos(2x), which is cos^2 x - sin^2 x = cos^2 x - (1-cos^2) = 2cos^2 x - 1.
So we have (2cos^2 x - 1)(2cos x + 1) = 0. So 2cos^2 x -1 = 0 or x = 0 and 2pi.
For 2sec^2 x + tan^2 x - 3 = 0, use the identity sec^2 x = tan^2 x + 1, so we have
2(tan^2 x + 1) + tan^2 x - 3 = 0 or
<span>2tan^2 x + tan^2 x - 1 = 0 or
</span>3 tan^2 x = 1.
So x = pi/2, pi/2 + pi = 3pi/2.
Answer:
217.7777 m/s
Step-by-step explanation:
1km = 1000 metros
784 km = 784*1000 = 784000 metros
1 hora = 3600 segundos
entonces:
784 kilómetros en una hora = 784km/h = 784000m/3600ses
= 217.7777 m /s
es decir que recorre en cada segundo:
217.7777 metros.
Tarea relacionada:
https://brainly.lat/tarea/16056884
Answer: 8
Explanation:
Form: y = mx + b
Where:
m is the slope
b is the y-intercept
We have:
10x + y = 8
y = -10x + 8
Thus, the y-intercept is 8
