Solution
prove
Solution
Solution steps
Show that the two sides are not equal
Popular Examples
prove tan(α)+(cos(α))/(1+sin(α))=sec(α)prove prove (1-cos^2(x))sec(x)=sin^2(x)sec(x)prove prove cos^2(2θ)-sin^2(2θ)=2cos^2(θ)-1prove prove 2-2sin^2(x/2)=2sin^2(x)prove prove cos(6x)=1-2sin^2(3x)prove
Frequently Asked Questions (FAQ)
Is cos(20)=-sin^2(θ) ?
The answer to whether cos(20)=-sin^2(θ) is False