Answer:
nope i can't im blind
Step-by-step explanation:
Answer:
8 laps
Step-by-step explanation:
every 8mins 4 laps are run
Answer:
First, let's recall some usefull information:
- cot(x) = 1/tg(x) = cos(x)/sin(x)
- tan(x) = sin(x)/cos(x)
We also know that:
- cos(x - pi/2) = sin(x)
- sin(x - pi/2) = -cos(x)
Now we can use those relationships and get:
cot(x - pi/2) = cos(x - pi/2)/sin(x -pi/2) = sin(x)/-cos(x) = -tan(x)
So we have verified the identity, and explained step by step why the identity is true.
Answer:
14.488 amperes
Step-by-step explanation:
The amplitude I of the current is given by
where
= amplitude of the energy source E(t).
Z = Total impedance.
The amplitude of the energy source is 120, the maximum value of E(t)
The total impedance is given by
where
<em>
R= Resistance
</em>
<em>L = Inductance
</em>
<em>C = Capacitance
</em>
<em>w = Angular frequency
</em>
= inductive reactance
= capacitive reactance
As E(t) = 120sin(12t), the angular frequency w=12
So
and
Finally
6x + 2 = 2x - 1
Move the variables to one side. I subtract 2x from both sides.
4x + 2 = -1
Subtract 2.
4x = -3
Now divide by 4 on both sides.
x = -3/4 or -0.75
