Solve the following equation for solutions over the interval

Solve the following equation for solutions over the interval [0, 2x) by first solving for the trigonometric function. sec^2x + 4 tan^2 x = 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution set is (Simplify your answer. Type an exact answer, using t as needed. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) B. The solution set is the empty set.

Solution

sec²x+4 tan²x=1

1 + tan²x + 4tan²x-1=0

5tan²x=0

tan²x=0

tan x=0

x=tan^-10

x=0,pi

and that\'s the solution,