Solution

prove

Solution

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

Popular Examples

prove sin(x)tan(x)sec(x)=sec^2(x)-1prove tan^4(k)-sec^4(k)=1-2sec^2(k)prove 1-tan^4(x)=2sec^2(x)-sec^4(x)prove sin(pi)=sin(-pi)prove csc(t)cot(t)=(1+cot^2(t))/(sec(t))

Frequently Asked Questions (FAQ)

  • Is tan(2A)=(2tan(A))/(1-tan^2(A)) ?

    The answer to whether tan(2A)=(2tan(A))/(1-tan^2(A)) is True