Question

Guys how do I prove this identity ---> 4+sinfeta = 6(cos square)feta

Answer 1

Sorry solve the equation of this where 0 ≤0 ≤ 360

Answer 2

theta

Answer 3

Yeah theta**

Answer 4

I think that is how your equation looks like!

\[\Large 4+\sin \theta=6\cos^2\theta\]

Am I right?

Answer 5

Yess!

Answer 6

That is great!

Any ideas how to start?

Answer 7

Nope :/ none of the identities rule work at least

Answer 8

try this one!
\[\Huge\color{Coral}{sin^2 \theta +cos^2\theta=1}\]
or
\[\Huge\color{MediumVioletRed }{6~sin^2 \theta +6~cos^2\theta=6}\]

Answer 9

substitute with \(6~cos^2\theta\) into your equation!

Answer 10

I don't get it. How does that apply to the question?

Answer 11

What about the 4 then?

Answer 12

I will show you!

Answer 13

Did you get the idea?