## anonymous 3 years ago how to prove (sin^3x)(1+cos^2x)=sin

1. anonymous
2. anonymous

$(\sin^3x)(1+\cos^2x)=\sin x$$(1+\cos^2x)={\sin x \over \sin^3x}$$(1+\cos^2x)={1 \over \sin^2x}$

3. Mertsj

You may have posted it incorrectly. I don't believe it is true. For example, substitute pi/6 for x and you will get: 1/8(1+3/4)=1/2. Clearly not true.