Trigonometric Equations Flashcards by Anna McAllister

Q

sin(a+b)

A

sina cosb + cosa sinb

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Q

sin(a-b)

A

sina cosb - cosa sinb

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Q

cos(a+b)

A

cosa cosb - sina sinb

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Q

cos(a-b)

A

cosa cosb + sina sinb

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Q

sin^{2}x + cos^{2}x

A

1

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Q

(sinx)/(cosx)

A

tanx

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Q

sin(-a)

A

-sina

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Q

cos(-a)

A

cosa

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