Question

Trigonometry Question:
Solve the equation for θ if 0° ≤ θ < 360°. (Enter your answers as a comma-separated list.)

square root (2) sec theta = 2

sec theta = 2/(square root (2))
sec theta = 2(sqrt(2))/2

**2(sqrt(2))/2 isn't on the table I've been using.
http://mathmistakes.info/facts/TrigFacts/learn/vals/sum.html
Where do I go from here?

Answer 1

take reciprocal
sec = 1/cos

\[\sec \theta = \frac{2}{\sqrt{2}} \leftarrow \rightarrow \cos \theta = \frac{\sqrt{2}}{2}\]

Answer 2

Oh... Thanks! :)

Answer 3

yw :)