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

Frequently Asked Questions (FAQ)

  • Is sin(4a)=4sin(a)cos(a)cos(2a) ?

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