1. ## Trig problem

I have to express the given trigonometric function in terms of the indicated function.

cos theata in terms of sec theata.

2. Originally Posted by scottsw1
I have to express the given trigonometric function in terms of the indicated function.

cos theata in terms of sec theata.

by definition: $\sec \theta = \frac 1{\cos \theta}$

just solve that for $\cos \theta$ (make it the subject of the formula)

3. All i know is sec is the inverse of cos. see, if it works for you and help you solve your problem.

4. Originally Posted by lekhabhatt81
All i know is sec is the inverse of cos. see, if it works for you and help you solve your problem.
it is better to say "reciprocal" than "inverse" here. the inverse of $\cos x$ is $\cos^{-1} x$ (or $\arccos x$), and this is different from $\sec x$

5. You are indeed correct. Sec is the reciprocal of cos. thanks buddy!

6. I am lost, please help. I know that sec=1 over cos, but what forumlua do I use to work the problem?

7. could you put in the entire question? because with what you have put up... this is all that can be said, i guess.

8. Express the given trigometric function in terms of the indicated fucntion:
cos theta in terms of sec theata.

9. Originally Posted by scottsw1
Express the given trigometric function in terms of the indicated fucntion:
cos theta in terms of sec theata.
you already have the formula. i told you the formula. just solve for cosine

10. Please show me how to work the entire problem out. Thanks.

11. Originally Posted by scottsw1
Please show me how to work the entire problem out. Thanks.
Jhevon has solved the problem for you as best it can be solved with the information you have given. Are there any further values you have not supplied?

12. Here is a photocopy of the problem:
http://farm4.static.flickr.com/3619/...c5c8a712db.jpg

13. Does the link show an insight on how to solve the problem?

14. I looked at the link.

Some of the problems are written very strangly. For example in ther first problem the first sec part of the equation seems to be raised to the power of something. But what?