The equation is equivalent to 1/cos(2x)-2=sin(2x)/cos(2x).
Make the denominator cos(2x) for all terms, we get
1-2cos(2x)=sin(2x).
Since cos^2(2x)+sin^2(2x)=1,
let cos(2x)=a,
substitute sin(2x) by
+-\sqrt(1-a^2),
and solve the equation with only one variable a.
We get a=4/5 or 0,
but cos(2x) cannot be 0,
otherwise sec(2x) is undefined.
2x=36.9 degrees,
so x=18.9 degrees
in radians we have
x=(18.9/180)*pi=0.33
answer
0.33 (it is between [0, 2π))
Answer:
40
Step-by-step explanation: you have to multiply 4 by 10 to get ur answer
Answer:
Growth factor is 1.2
Growth rate is 0.2
Step-by-step explanation:
Generally, we can have an exponential function as:
y = a(1 + r)^x
Where a is the initial value (y value when x = 0, which is 10)
r is the growth rate
at x = 2
14.4 = 10(1 + r)^2 •••••(i)
at x = 1
12 = 10(1 + r)^1 •••••(ii)
Divide i by ii
14.4/12 = 1 + r
1.2 = 1 + r
r = 1.2-1
r = 0.2
1 + r = 0.2 + 1 = 1.2
Answer:
D or 6 2/5 or 32/5
Step-by-step explanation:
convert 1 3/5 into fraction
8/5/1/4
convert to multiplicaton
8/5 times 4/1
simplify 32/5
convert 6 2/5
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