Calculating values when combining the tangens and cosinus function

[Rask]

Hello, I'm currently studying for an exam I will have right before semester 2 starts now in August and I could really use some help

The question is basically "Calculate the value of tan(cos^-1(0.5))"

I can't understand why or how I would do this, do I turn cosinus into something using sinus and tangens or where do I begin??

Thank you!

 

[stapel]

I'm currently studying for an exam I will have right before semester 2 starts

Is this a placement test or other assessment designed to see where you need to start your studies? If so, then there is nothing to "study" for.

"Calculate the value of tan(cos^-1(0.5))"

I can't understand why or how I would do this...

"Why"? Because they asked you to. "How"? Well...

Have you studied trigonometry at all, or are you needing lessons starting from the basic definitions? Realize: This question assumes that you have some knowledge of trig functions and their inverses. If you really have no idea what's going on, then you need weeks, if not months, of lessons. So please be specific about the type of help you are needing. Thank you!

 

[HallsofIvy]

This question was posted (without the information about the test just before semester starts) in another forum and answered there.