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 + tanY/cosY
= 1/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 = 30º
LS = sec30(1+tan30) = appr. 1.821
RS = 6csc30 = 12
No wonder you can't prove it, it is not true !
Answer This Question
More Related Questions
- Math - Suppose f(x) = sin(pi*cosx) On any interval where the inverse function y...
- Trigonometry Help - Simplify: sin(x-y)cosy+cos(x-y)siny = (sinxcosy-cosxsiny)...
- 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