Welcome :: Homework Help and Answers :: Mathskey.com
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Most popular tags

13,459 questions

17,854 answers

1,446 comments

811,144 users

How to simplify these expressions (trigonometry)?

+1 vote

1. sin^2 theta x cos theta + cos^3 theta = ?
2. cos^2 theta - sin^2 theta x cos^2 theta = ?

asked Jan 22, 2013 in TRIGONOMETRY by linda Scholar
Share this question
Google+ Facebook Twitter LinkedIn Reddit

1 Answer

+1 vote

1. sin^2 theta x cos theta + cos^3 theta = ?

=costheta(sin^2 theta+cos^2 theta)

Where sin^2 theta+cos^2 theta=1

=costheta


2. cos^2 theta - sin^2 theta x cos^2 theta = ?

=cos^2 theta(1-sin^2 theta)

1-sin^2 theta=cos^2 theta

=cos^2 theta*cos^2 theta

=cos^4 theta

 

answered Jan 22, 2013 by bradely Mentor

Related questions

Copyright © 2024 MATHSKEY. All Rights Reserved.         Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ
...