Solution

prove

Solution

Solution steps
Show that the two sides are not equal
For plug in
Refine to a decimal form
Refine to a decimal form
The two sides are not equal

Popular Examples

prove tan(pi/2-x)sin(x)=cos(x)prove (1+sin(x))(1+sin(-x))=cos^2(x)prove 1-tan^2(x/2)=(2cos(x))/(1+cos(x))prove (cos(3x))/(cos(x))=4cos^2(x)-3prove sin(arcsin(x)+arccos(x))=1

Frequently Asked Questions (FAQ)

  • Is cos(x+pi/2)=sin(x) ?

    The answer to whether cos(x+pi/2)=sin(x) is False