EXTRA BONUS 1 (IDENTITAS TRIGONO)

• cosec x

• Secan x

• Cotan x

• tan x

Sin²x = ...

• cosx - 1

• cos²x-1

• 1-cos²x

• 1 - cosx

Sin2x = ...

• sinxcosx

• 2sinxcosx

• 1-2sin²x

• 1-2cos²x

cos2x=....

• 1-2sin²x

• 1-2cos²x

• 2sinxcosx

• 2cos²x-1

Cos A + Cos B

• 2 cos undefined.sin undefined

• -2 sin undefined.sin undefined

• 2 cos undefined.cos undefined