(sin2θ +cos2θ)² = 4sinθcosθ - 8sin³θcosθ +1 and sin4x = 8cos³xsinx - 4cosxsinx

[@emmanuelbrazy3971]

Best teacher

[@ethandenn10]

Are these identities carry over from gr 11 or from the next chapter?

[@mshavrotscanadianuniversit6234]

Definitely all grade 12 material.

[@ethandenn10]

@@mshavrotscanadianuniversit6234 thanks

[@emmanuelbrazy3971]

Subscribed to the channel

[@mshavrotscanadianuniversit6234]

Thanks!