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Hint

1

csc

1/sin

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2

sec

1/cos

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3

cot (1/what)

1/tan

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4

tan

sin/cos

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5

cot

cos/sin

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6

sinÂ˛ + cosÂ˛

1

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7

sinÂ˛ - 1

cos^2

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8

1 + cotÂ˛

csc^2

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9

tanÂ˛ + 1

sec^2

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10

Radian Measure

arc length/radius length

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11

sin(a+b)

sin(a)cos(b) + cos(a)sin(b)

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12

cos(a+b)

cos(a)cos(b) - sin(a)sin(b)

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13

sin(a-b)

sin(a)cos(b) - cos(a)sin(b)

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14

cos(a-b)

cos(a)cos(b) + sin(a)sin(b)

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15

sin(2a)

2sin(a)cos(a)

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16

cos(2a)

cos^2(a) - sin^2(a)

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