Posted by help! on Saturday, September 19, 2009 at 9:24am.
Ok, i've tried this question, and it brings me to no answers. Please help!
Prove the following:
secY(1+tanY)=6cosecY
my workings:
LeftHandSide:
secY + tanY/cosY
= 1/cosY + sinY/cos^2Y
=(cosY+sinY)/cos^2Y
= ???
How should i attempt this question?? Am i even on the right track? Please help, much appreciated!

Trigo help!  Reiny, Saturday, September 19, 2009 at 10:01am
When I come across an unusual trig identity to prove, the first thing I do is try some arbitrary angle.
Since it is an Identity it should be true for any angle
e.g. Y = 30ยบ
LS = sec30(1+tan30) = appr. 1.821
RS = 6csc30 = 12
No wonder you can't prove it, it is not true !
Answer This Question
Related Questions
 Math  Suppose f(x) = sin(pi*cosx) On any interval where the inverse function y...
 Trigonometry Help  Simplify: sin(xy)cosy+cos(xy)siny = (sinxcosycosxsiny)...
 Trigonometry  Prove that (cosy/1+siny) + (1+siny/cosy) = 2secy
 calc  what is the derivative of sinx cosy = 0 in its simplest form? I got to ...
 Trigonometry  Write equivalent equations in the form of inverse functions for a...
 Math  How do I get (sinx cosy + cosx siny) (cosx cosy + sinx siny) in the form ...
 Trigonometry (repost Reiny)  at 1:35am I posted ; Write equivalent equations in...
 Trigonometry(please Clarify)  I posted before ; Write equivalent equations in ...
 maths (trigonometry)  please solve these if possible Q1. If sinx +siny=3(cosy...
 math  sinx+ siny/ (cosx+cosy)= tan 1/2 (x+y) prove this identity
More Related Questions