The following warnings occurred:
Warning [2] count(): Parameter must be an array or an object that implements Countable - Line: 795 - File: showthread.php PHP 7.4.33 (FreeBSD)
File Line Function
/showthread.php 795 errorHandler->error




HP Forums / HP Calculators (and very old HP Computers) / HP Prime v / trigcos() function

Post Reply 
trigcos() function
11-04-2014, 12:40 PM
Post: #1
DrD Offline
Senior Member
 		Posts: 1,136
Joined: Feb 2014
trigcos() function
s:=√((sin(t))²+(-cos(t)+1)²)
k:=expand(s) ---> √(-2*cos(t)+(cos(t))²+1+(sin(t))²)

trigcos(√(-2*cos(t)+(cos(t))²+1+(sin(t))²)) ---> √(-2.*cos(t)+2.)
trigcos(k) ---> 2.*ABS(sin(0.5*t))

With both trigcos() cases the same, why the additional simplification on trigcos(k)?

How can I get the trigcos(k) result: √(-2.*cos(t)+2.)?

Thanks,

-Dale-
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
trigcos() function - DrD - 11-04-2014 12:40 PM
RE: trigcos() function - parisse - 11-04-2014, 02:22 PM



User(s) browsing this thread: 1 Guest(s)

Contact Us | The Museum of HP Calculators | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication