Solution

prove

Solution

Solution steps
Manipulating left side
Rewrite using trig identities
Use the Pythagorean identity:
Simplify
Distribute parentheses
Apply minus-plus rules
Simplify
Group like terms
Add the numbers:
We showed that the two sides could take the same form

Popular Examples

prove cos(θ)=cos(-θ)prove 4cos^3(x)-3cos(x)=cos(3x)prove csc^2(-θ)-1=cot^2(θ)prove cos(6x)=2cos^2(3x)-1prove tan^2(x)-tan^2(x)sin^2(x)=sin^2(x)

Frequently Asked Questions (FAQ)

  • Is 1-tan^2(x)=2-sec^2(x) ?

    The answer to whether 1-tan^2(x)=2-sec^2(x) is True