trig exam 1 Flashcards

1
Q

how to find the 2 coterminal angles

A

add and subtract 365° or 2π

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2
Q

how to find the complimentary angle

A

90° or π/2 minus angle

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3
Q

how to find the supplementary angle

A

180° or π minus angle

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4
Q

arc length variable

A

s

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5
Q

central angle variable

A

θ

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6
Q

arc length equation

A

s = rθ

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7
Q

area of a sector of a circle equation

A

A = 1/2 r^2 θ

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8
Q

linear speed variable

A

v

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9
Q

angular speed variable

A

w

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10
Q

linear speed equation

A

v = s/t

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11
Q

angular speed equation

A

w = θ/t

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12
Q

trig identity

A

sin^2 θ + cos ^2 θ = 1

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13
Q

how to find the reference angle

A

acute angle along the x-axis

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14
Q

equation for graphing

A

d + a sin (bx-c) OR
a sin (bx-c) + d

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15
Q

period equation

A

2π/b

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16
Q

amplitude equation

A

absolute value of a

17
Q

horizontal shift equation

18
Q

vertical shift equation

19
Q

how to know if there is a reflection

A

if a is negative, there is a reflection

20
Q

LE equation

21
Q

RE equation

A

bx-c = 2π