Trigonometric identities

Edexcel A level trigonometric identities - years 1 and 2

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Last updated: April 18, 2023

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First submitted	April 18, 2023
Times taken	26
Average score	46.2%
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Hint	Answer
sin²x+cos²x	1
tanx	sinx/cosx
cotx	cosx/sinx
secx	1/cosx
cosecx	1/sinx
sec²x	1+tan²x
cosec²x	1+cot²x

Hint	Answer
sin(2x)	2sinxcosx
cos(2x)	cos²x-sin²x
cos(2x)	2cos²x-1
cos(2x)	1-2sin²x
sin(A+B)	sin(A)cos(B)+sin(B)cos(A)
cos(A+B)	cos(A)cos(B)-sin(A)sin(B)

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