Solution

prove

Solution

Solution steps
Manipulating left side
Rewrite using trig identities
Use the Double Angle identity:
Multiply the numbers:
Distribute parentheses
Apply minus-plus rules
Add similar elements:
We showed that the two sides could take the same form

Popular Examples

prove cos(α-β)-cos(α+β)=2sin(α)sin(β)prove 1=sec^2(θ)-tan^2(θ)prove tan^8(x)=tan^6(x)sec^2(x)-tan^6(x)prove 2(sin(2y)cos(2y))=sin(4y)prove ((tan^2(t)))/(sec(t))=sec(t)-cos(t)

Frequently Asked Questions (FAQ)

  • Is 2sin^2(2x)+cos(4x)=1 ?

    The answer to whether 2sin^2(2x)+cos(4x)=1 is True