A community for students. Sign up today!
Here's the question you clicked on:
← 55 members online
 0 viewing
 2 years ago
Folks,
I'm trying to evaluate (1/2)sin(2arcsec(8)) where arcsec is the inverse secant. The answer is supposed to be 3sqrt(7)/128. I'll post a sketch of what I've done so far.
 2 years ago
Folks, I'm trying to evaluate (1/2)sin(2arcsec(8)) where arcsec is the inverse secant. The answer is supposed to be 3sqrt(7)/128. I'll post a sketch of what I've done so far.

This Question is Closed

TransendentialPI
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1343155955658:dw. I'm not sure how deal with the 2arcsec(8)

Uniquebum
 2 years ago
Best ResponseYou've already chosen the best response.0\[arcsec(8) = \frac{\pi}{2}+\arcsin(1/8)\] If that sounds weird, draw a sketch and you might notice why.

TransendentialPI
 2 years ago
Best ResponseYou've already chosen the best response.0It might be an equivalence, but how does that become 3sqrt(7)/128?

TransendentialPI
 2 years ago
Best ResponseYou've already chosen the best response.0Is there an identity I'm missing?
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.