Question

Help me solve this trig problem?

Answer 1

\[4\sec ^{2}x-2=0,\] where the domain is between 0 and 540 degrees.

Answer 2

I keep getting an error, but am unsure if I'm supposed to or not! Thanks!

Answer 3

sec^2x = 0.5
sec x = +/- sqrt5

cos x = +/- 1 / sqrt5

Answer 4

Where does the square root 5 come from?

Answer 5

oh sorry - thats my mistake- its square root of 0 .5

Answer 6

thats +/- (1/0.7071)

which will not give you an answer since the range of the cosine of an angle is bet see -1 and 1

Answer 7

so there are no real roots to this equation