# auxiliary angle method and other trig questions

Watch
Announcements
This discussion is closed.
#1
Could someone teach me this auxiliary angle method and explain what is can actually be used for? I've looked in my book but it doesn't seem to be in there. Which P books cover this topic?

I would also like to ask, what are the uses of cotangent, cosecant, and secant? Or Sin^2 x and other forms similar to that?

And last of all, i would like to ask why are angles sometimes expressed as an angle then minutes and then something else? Like this: angle minute'' and something i don't know

Thanks
0
15 years ago
#2

err... cot, cosec and sec are just the 3 'other' definitions that most people forget due to the syllabus... they are used exactly like sin, cos, tan (I dissagree... no calculator button for those!!)

and its the same for HMS notation (no... its not a ship... its the Hours/Minutes/Second notation..)... so 1 Degree = 60 Minutes = 3600 Seconds... errr or... 1o = 60' = 3600" to be more mathematical... its just how the we never got rid of the babylonian style calculation.. (they worked in base-60)
0
X
new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### What are you most likely to do if you don't get the grades you were expecting?

Go through Clearing (247)
39.39%
Take autumn exams (186)
29.67%
Look for a job (21)
3.35%
Consider an apprenticeship (25)
3.99%
Take a year out (110)
17.54%
Something else (let us know in the thread!) (38)
6.06%