Hi, I need help trying figure out this problem: I'm trying to figure out the steps to get from one equation to another
Starting Equation:
$Y = X \cos^2 \theta \cos^2 (\frac \pi 2 - \theta)$
**missing steps**
Final Equation:
$Y = \frac X 4 \sin^2 2\theta$
If anyone can help I'd greatly appreciate it. Thanks!
Trigonmetry Derivation problem...please help!!
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- Posts:2
- Joined:Fri Mar 08, 2013 8:52 am
Re: Trigonmetry Derivation problem...please help!!
Welcome to BdMO forum! Please read how to use LaTeX from here http://www.matholympiad.org.bd/forum/vi ... p?f=25&t=2 , it's easy and fun.DCabral242 wrote: Starting Equation:
$Y = X \cos^2 \theta \cos^2 (\frac \pi 2 - \theta)$
**missing steps**
Final Equation:
$ = \frac X 4 \sin^2 2\theta $
$Y = X \cos^2 \theta \cos^2 (\frac \pi 2 - \theta)$
$ = X \cos^2 \theta \sin^2 \theta$
$ = \frac X 4 (2 \sin \theta \cos \theta)^2 $
$ = \frac X 4 \sin^2 2\theta $
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Use $L^AT_EX$, It makes our work a lot easier!
Nur Muhammad Shafiullah | Mahi
Use $L^AT_EX$, It makes our work a lot easier!
Nur Muhammad Shafiullah | Mahi
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- Posts:2
- Joined:Fri Mar 08, 2013 8:52 am
Re: Trigonmetry Derivation problem...please help!!
Thank you so much!