Chapter 5 Memorization

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sin2x + cos2x

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Pre-Calculus

16 Terms

1

sin2x + cos2x

= 1

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2

1 + tan2x

= sec²x

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3

1 + cot2x

= csc2x

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4

tanx

1/cotx, sinx/cosx, cot(pi/2 - x)

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5

cotx

1/tanx, cosx/sinx, tan(pi/2 - x)

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6

sinx

1/cscx, cos(pi/2 - x)

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7

cscx

1/sinx, csc(pi/2 - x)

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8

cosx

1/secx, sin(pi/2 - x), cos(-x)

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9

secx

1/cosx, csc(pi/2 - x), sec(-x)

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10

sin(-x)

-sinx

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11

tan(-x)

-tanx

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12

csc(-x)

-cscx

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13

cot(-x)

-cotx

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14

sinx * cscx

1

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15

cosx * secx

1

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16

tanx * cotx

1

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