Solution

prove

Solution

Solution steps
Manipulating right side
Rewrite using trig identities
Use the Product to Sum identity:
Simplify
Multiply fractions:
Cancel the common factor:
Refine
We showed that the two sides could take the same form

Popular Examples

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

Frequently Asked Questions (FAQ)

  • Is cos(a+b)+cos(a-b)=2cos(a)cos(b) ?

    The answer to whether cos(a+b)+cos(a-b)=2cos(a)cos(b) is True