Question

Factor the algebraic expression below in terms of a single trigonometric function. cos x - sin 2x - 1

Answer 1

\[\cos(x)-\sin(2x)-1\] or
\[\cos(x)-\sin^2(x)-1\]

Answer 2

@satellite73 can try my question pls

Answer 3

It's cos(x)-sin^2(x)-1

Answer 4

ok then maybe we can use
\[\sin^2(x)+\cos^2(x)=1\] somewhere

Answer 5

replace \(\sin^2(x)\) by \(1-\cos^2(x)\) in your expression
you get
\[\cos(x)-(1-\cos^2(x))-1\] then some algebra to fix it up a bit