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Algebra 2 + Trigonometry > Unit 11 (Trigonometry) > Flashcards

Unit 11 (Trigonometry) Flashcards

1
Q

The theta is

A

The measure of a central angle in radian measures.

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2
Q

If an angle moves counter-clockwise, then it is

A

Positive.

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3
Q

If an angle moves clockwise, then it is

A

Negative.

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4
Q

Sin x is equal to

A

Opposite/Hypotenuse

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5
Q

Cos x is equal to

A

Adjacent/Hypotenuse

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6
Q

Tan x is equal to

A

Opposite/Adjacent

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7
Q

Csc x is equal to

A

Hypotenuse/Opposite

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8
Q

Sec x is equal to

A

Hypotenuse/Adjacent

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9
Q

Cot x is equal to

A

Adjacent/Opposite

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10
Q

If the ______ length is equal to the ___ length, the angle measures one radian

A

radius, arc

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11
Q

The terminal side of an angle in standard position is

A

the side of an angle that moves.

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12
Q

The pythagorean theorem is

A

A² + B² = C²

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13
Q

Pythagroean identity number one is

A

(sinθ)²+(cosθ)² = 1

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14
Q

Pythagorean identity number two is

A

(tanθ)²+1 = (secθ)²

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15
Q

Pythagorean identity number three is

A

1 + (cosθ)² = (cscθ)²

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16
Q

The cofunction of sin is

A

Cos

17
Q

The cofunction of sec is

A

Csc

18
Q

The confunction of tan is

A

Cot

19
Q

A unit circle is

A

A circle that has a radius of one

20
Q

The sin of a unit circle angle is always

A

The y value

21
Q

The cos of a unit circle angle is always

A

The x value

22
Q

The amplitude of a graph is

A

the maximum vertical height of the function

23
Q

If a graph is flipped over the x axis, the amplitude is

A

negative

24
Q

A cycle of a sin/cos graph is

A

when the graph has made it from it’s min to it’s max

25
Q

The frequency of a sin/cos graph is

A

the number of cycles you see from 0-360 degrees

26
Q

The period of a graph is

A

the number of degrees you graph in order to see one complete cycle

27
Q

A sinosoidal function is

A

A function with sine or cosine

28
Q

The arc length formula is

A

radius x theta

Algebra 2 + Trigonometry (7 decks)

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