Question about Super Tutor Trigonometry (ESDTRIG) for PC
Sec^4X- sec^2X = 1/cot^4X + 1/cot^2X
1/cot^4X + 1/cot^2X
=1/(Cos^4X/Sin^4X) + 1/(Cos^2X/Sin^2X)
=Sin^4X/Cos^4X + Sin^2X/Cos^2X
=Sin^4X/Cos^4X + Cos^2X.Sin^2X/Cos^4X
=Sin^2X/Cos^4(Sin^2X + Cos^2X)
=1/Cos^4X - Cos^2X/Cos^4X
=1/Cos^4X - 1/Cos^2X
=Sec^4X - Sec^2X
Posted on Mar 15, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 11, 2014 | Computers & Internet
Feb 02, 2014 | SoftMath Algebrator - Algebra Homework...
SEC, CSC & COT are the INVERSE of COS, SIN & TAN and are usually require hitting the "2nd F" or "Func" key of the calc to make:
SIN button work as COSEC,
COS button work as SEC
TAN button work as COT
Formulas are below:
sec x = 1
cosec x = 1
cot x = 1 = cos x
tan x sin x
Feb 05, 2013 | Sharp EL531 Scientific Calculator
Oct 03, 2011 | Office Equipment & Supplies
Aug 13, 2010 | SoftMath Algebrator - Algebra Homework...
Dec 06, 2009 | Texas Instruments TI-30XA Calculator
Nov 30, 2009 | DFI AD73 Pro Motherboard
Oct 15, 2009 | Google Computers & Internet
May 12, 2009 | ValuSoft Bible Collection (10281) for PC
490 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: