A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
Verifying Trigonometric Identities
1.) cos^2 xsin^2 x
answer:12sin^2 x
2.) cos^2 xsin^2 x
answer= 2cos^2 x 1
This is confusing. Both problems start the same but equal different things. How would you solve these?
 2 years ago
Verifying Trigonometric Identities 1.) cos^2 xsin^2 x answer:12sin^2 x 2.) cos^2 xsin^2 x answer= 2cos^2 x 1 This is confusing. Both problems start the same but equal different things. How would you solve these?

This Question is Closed

daniel987600
 2 years ago
Best ResponseYou've already chosen the best response.1They both start from: \[\cos^2(x)  \sin^2(x)\] We also know:\[\cos^2(x) + \sin^2(x) = 1\] Now we can either substitute \[1  \cos^2(x) =\sin^2(x) \]or \[1  \sin^2(x) = \cos^2(x)\] Depending on which substitution we do, we get either (Substitution 1):\[\cos^2(x)  (1  \cos^2(x)) = 2\cos^2(x)  1\] or (Substitution 2):\[(1  \sin^2(x))  \sin^2(x) = 1  2\sin^2(x)\]
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.