som- en verschilformules Flashcards

1
Q

cos (α - b)

A

cos (α) x cos (b) + sin (α) x sin (b)

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2
Q

cos (α + b)

A

cos (α) x cos (b) - sin (α) x sin (b)

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3
Q

sin (α - b)

A

sin (α) x cos (b) - cos (α) x sin (b)

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4
Q

sin (α +b)

A

sin (α) x cos (b) + cos (α) x sin (b)

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5
Q

tan (α - b)

A

tan (α) - tan (b) / (1 + tan (α) x tan (b) )

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6
Q

tan (α + b)

A

tan (α) + tan (b) / (1 - tan (α) x tan (b) )

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