trig identities

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17 Terms

1

sinx

1/cscx

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2

cscx

1/sinx

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3

cosx

1/secx

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4

secx

1/cosx

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5

tanxx

1/cotx

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6

tanx

sinx/cosx

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7

cotxx

1/tanx

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8

cotx

cosx/sinx

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9

sin²0+cos²0

=1

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10

1+tan²0

=sec²0

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11

1+cot²0

csc²0

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12

cos-1x/arcosx

√1-x²

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13

son-1x/arcsinx

arccos/cos-1√1-x²

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14

sin(a+b)

sina cosb +- cosa sinb

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15

cos(a+b)

cosa cosb +- sina sinb

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16

sin(20)

2sin0cos0

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17

cos(20)=cos²0-sin²0

=1-2sin²0=2cos²0-1

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