Answer:
See proof below
Step-by-step explanation:
Let . If w=-z, then r=0 and r is real. Suppose that w≠-z, that is, r≠0.
Remember this useful identity: if x is a complex number then where is the conjugate of x.
Now, using the properties of the conjugate (the conjugate of the sum(product) of two numbers is the sum(product) of the conjugates):
=
Thus . From this, . A complex number is real if and only if it is equal to its conjugate, therefore r is real.
Answer:
Step-by-step explanation:
Refer to physics equation , where is angular velocity.
Angular velocity's SI unit is rad/s. Convert rev/min to rad/s:
Now substitute and into :
A. 50 divided by .6 is 30 so .6
B. x=9 y=30
Answer:
a = 12.594678463488691
c = 17.058934471398032
Step-by-step explanation:
A = 42
B = 73
C = 65
which is a total of 180
a = 12.594678463488691
b = 18
c = 17.058934471398032