Solution

prove

Solution

Solution steps
Manipulating left side
Rewrite using trig identities
Use the Double Angle identity:
Use the Double Angle identity:
Simplify
We showed that the two sides could take the same form

Popular Examples

prove 2cot(x)sin(x)=2cos(x)prove cos(3x)=cos(x)(4cos^2(x)-3)prove 1/(sin(x)cot(x))=sec(x)prove csc(θ)+sin(θ)=(2-cos^2(θ))/(sin(θ))prove tan^2(x)-sin^2(x)=tan^2(x)

Frequently Asked Questions (FAQ)

  • Is 4sin(x)cos(x)cos(2x)=sin(4x) ?

    The answer to whether 4sin(x)cos(x)cos(2x)=sin(4x) is True