factor left
sinX)(sin^2x+cos^2X)=
sinX*1 which does not equal the right.
Lets look at the original idenity:
at x=45 deg
.707^3+.707(.707^2)=
.707^3 * 2= .706
now, the right side for 45deg
1/.707=1.4
The indenity is not an idenity as you have written it.
Prove the identity Sin^3X+sinx*cos^2X=tanx/cosX
1 answer
1 answer