cosxsin^2x+cos^3x

Question

cosxsin^2x+cos^3x

myininaya · Answer

simplify?

myininaya · Answer

cosx((sinx)^2+(cosx)^2)=cosx

amistre64 · Answer

cos(x)(sin^2 + cos^2)
cos(x)(1) = cos(x)

myininaya · Answer

no mistakes for the win!

laddiusmaximus · Answer

lost. im so going to fail this quiz on tuesday.

amistre64 · Answer

:)

amistre64 · Answer

I got a trig test on....either mon or wed..cant recall

laddiusmaximus · Answer

this class is being taught counterintuitive to the way I learn

laddiusmaximus · Answer

start over from the beginning please.

amistre64 · Answer

Trig is ALOT of memorizing; and after you learn it, it is useless cause they got calculators to tell you what the values are.  All trig class does it lets you know HOW these things were creatd and maybe some useful tidbits with identities for later in calculus...

laddiusmaximus · Answer

well i keep failing my tests and quizzes no matter how hard I try and its pissing me off.

anonymous · Answer

OK factor out a cosx  so you have cosx(sin^2x + cos^2x)
The most important trig identity is sin^2x + cos^2x = 1
so you substitue 1 for sin^2 + cos^2x and you get
cos x(1) = cosx

amistre64 · Answer

wish I could help there; but its like learning your times tables, practice, practice, practice....and then you still mess up sometimes :)

myininaya · Answer

time tables are fun!

amistre64 · Answer

lol .... my daughter doesnt think so :)

myininaya · Answer

but trig is funner than time tables

myininaya · Answer

I like going in circles

amistre64 · Answer

....and surfing on waves :)

myininaya · Answer

and angles are cool too!

amistre64 · Answer

I programmed me a Spirograph maker in Javascript; my kids think its "cool".

laddiusmaximus · Answer

i wish I thought it was fun. I want to understand this so bad and its frusterating to fail....repeatedly

amistre64 · Answer

Trig identities use alot of algebraic techniques to find solutions.  And if you are weak in algebra.... then it will be tough.  sorry....