Solution

prove

Solution

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

Popular Examples

prove (1+csc(x))(1+csc(-x))=-cot^2(x)prove cos(0)-sec(0)=-sin(0)tan(0)prove tan(pi/6)= 1/(sqrt(3))prove cos(4a)=1-8sin^2(a)cos^2(a)prove 1-cos(4x)=2sin^2(2x)

Frequently Asked Questions (FAQ)

  • Is sin(2α)=2sin(α)cos(α) ?

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