At the risk of piling on after correct answers have already been given, I’ll offer another way to address this problem. Recall that, if
θ
is real, cos()=Re()
cos
(
θ
)
=
R
e
(
e
i
θ
)
. So, with
A
and
B
real,
(+)+(−)=(+−)=2cos()
e
i
(
A
+
B
)
+
e
i
(
A
−
B
)
=
e
i
A
(
e
i
B
+
e
−
i
B
)
=
2
e
i
A
cos
(
B
)
Finally,
cos(+)+cos(−)=Re((+)+(−))=Re(2cos())
cos
(
A
+
B
)
+
cos
(
A
−
B
)
=
R
e
(
e
i
(
A
+
B
)
+
e
i
(
A
−
B
)
)
=
R
e
(
2
e
i
A
cos
(
B
)
)
=2cos()cos()
Answer:
12.5, not 100% sure though.
Answer :C
Step-by-step explanation: Lets begin with making this into an equation where x is the amount of months
x must be bigger than zero for them to cross
Power Plus = 34.06x + 20
Heavy Hulk = 34.31x + 32.50
When are these equal
34.06x + 20 = 34.31x + 32.50
34.06x = 34.31x + 12.50
-0.25x = 12.50
x = -50
Since x must be higher than zero(you cant go there for minus months) the answer is C
Answer:
Please see the attached file for the complete answer.
Step-by-step explanation:
Answer:
Point C
Step-by-step explanation:
Trust me it is correct
make me brainiest because I answered first pls