Answer:
x = pi, 3pi, 5pi etc
x = -pi, -3pi, -5pi etc
Step-by-step explanation:
cos^2 x + 2 cos x + 1 = 0
replace cos x with m
m^2 + 2m +1 = 0
solve by factoring (this is a^2 +2ab+b^2 = (a+b)^2 where a =m and b=1)
(m+1)^2=0
take the square root of each side
m+1 =0
m=-1
now replace m with cos x
cos x = -1
take arccos of each side
arccos cos x = arccos (-1)
x = pi, 3pi, 5pi etc
Answer:
The value will be less than 1
Step-by-step explanation:
Answer:
Cells create usable energy through Cellular Respiration.
Step-by-step explanation:
If you think about it, cellular respiration is the way cells make their food, or usable energy. Therefore, the answer would be up above-------------------------^^
There are no real numbers that can do that job.
The numbers are
<em> 1.5 + i √7.75</em>
and
<em>1.5 - i √7.75</em>
These are called 'complex numbers'. The symbol ' i ' stands for √-1 .
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If either the ' 3 ' or the ' 10 ' was actually supposed to be negative,
then the two numbers would be<em> 2 </em> and<em> -5 .</em>
Answer:
x=17
Step-by-step explanation:
VS is a straight line so it equals 180 degrees
The arc with be 180 degrees
VR + RS = 180
45+ 6x+33 = 180
Combine like terms
78+ 6x = 180
Subtract 78 from each side
78+6x-78 = 180-78
6x = 102
Divide each side by 6
6x/6 = 102/6
x =17
