A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing

This Question is Closed

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1first multiply them out. like a(bc) = abac so whats cos^x(sec^2x1) = ...  ... ?

Lindsey11x16
 2 years ago
Best ResponseYou've already chosen the best response.0cos^2x(sec^2x)  cos^2x1

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1yup, and you know what cos x * sec x = .. ?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1\(\large \cos^2x(\sec^2x1)=\cos^2x\sec^2x\cos^2x = ...?\)

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1can u simplify that ^ ? use the fact that cos x = 1/ sec x.

Lindsey11x16
 2 years ago
Best ResponseYou've already chosen the best response.0should i use factorization in this

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1nopes. since, cos x = 1/ sec x what is cos x * sec x = ... ?

Lindsey11x16
 2 years ago
Best ResponseYou've already chosen the best response.0should i turn secant into cos

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1yes., do that...what u get ?

Lindsey11x16
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1355024922967:dw

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1\(\large \cos^2x\sec^2x\cos^2x = 1 \cos^2 x=...?\)

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1use th identity \(\huge \color{red}{\sin^2x+\cos^2x=1}\) yes, sin^2 x is correct :)

Lindsey11x16
 2 years ago
Best ResponseYou've already chosen the best response.0thanks! this is hard cuz cuz i never know which identity to use :(

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1do u wanna know alternative way to solve this ? using other identity...

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1using \(\huge \color{red}{\sec^2x=1+\tan^2x}\) what can you write (sec^2x1)=...?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1and you can write tan^2 x as sin^2 x/ cos^2x

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1so, put (sec^2 x1) as sin^2 x/ cos^2x cos^2 x*( sin^2 x/ cos^2x) will again give you sin^2 x

Lindsey11x16
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1355025560186:dw
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.