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 approximately.
Answer:
There is 2163 m^2 left
Step-by-step explanation:
Answer:
A) 8.64 x 10^4
Step-by-step explanation:
4.8 * 3.6 / 2 = 8.64
10^6 * 10^3 / 10^5 = 10^(6 + 3 - 5) = 10^4
Answer: 8.64 * 10^4
Answer: 46.80
Step-by-step explanation:
20% of 39 = 7.80
39+7.80= 46.80
