Question

what is the secant of theta= 5pi/4?

Answer 1

anyone?

Answer 2

i know secant is 1/cos the cosine is -root2/2

Answer 3

\[\sec \theta=5\pi/4\]
If sec (Arccos) is the inverse of cos, then it follows that \[\theta = \cos 5\pi/4\]

Answer 4

1/ neg root2/2

Answer 5

right, so if :
\[\cos(\theta) = -\frac{\sqrt{2}}{2}\]
then we have:
\[\frac{1}{\cos(\theta)} = \sec(\theta) = -\frac{1}{\frac{\sqrt{2}}{2}} = -\frac{2}{\sqrt{2}} = -\sqrt{2}\]

Answer 6

I'm not sure what you're trying to say, but if I had to take a guess I'd say you're talking about the value of cos for an angle on a unit circle. Don't know why you're bringing it up though

Answer 7

i was under the impression that you wanted to know:

\[\sec(\frac{5\pi}{4})\]thats what i sounded like from the chat.

Answer 8

No, she wants to find: \sec \theta = 5\pi/4\]

Answer 9

\[\sec \theta = 5\pi/4\]

Answer 10

Just use your calculator to find cos5π/4