Solution

prove

Solution

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

Popular Examples

prove sin(pi/6)= 1/2prove (sin(t)-cos(t))^2=1-sin(2t)prove sin^2(x)-2cos^2(x)=1-3cos^2(x)prove cot(a)+tan(a)=2csc(2a)prove cot^2(x)=cos^2(x)+(cot(x)cos(x))^2

Frequently Asked Questions (FAQ)

  • Is 1+cos(10y)=2cos^2(5y) ?

    The answer to whether 1+cos(10y)=2cos^2(5y) is True