Sin2A
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The ones that aren't given in the formula book
Math
A-Level Mathematics
AQA
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2SinACosA
Cos2A
CosĀ²A - SinĀ²A
or
2CosĀ²A - 1
1 - 2sinĀ²A
Tan2A
(2TanA)
(1 - TanĀ²A)
SinĀ²x + CosĀ²x =
1
SecĀ²x =
TanĀ²x + 1
CosecĀ²x =
1 + CotĀ²x