(Untitled)

[blacknailsbtch]

Verify the identity sin^3x cos^4x = ( cos^4x - cos^6x ) sinx.
Proof: RHS = ( cos^4x - cos^6x ) sinx
= ( 1 - cos^2x ) cos^4x sinx
= ( sin^2x ) cos^4x sinx
= sin^3x cos^4x
= LHS

Comments

[blahgrldia]

hahah proud of u

[ashieho]

oh god,
dont remind me. i got a quiz tomorrow.