Midterm Review Flashcards

1
Q

Formulas for linear speed?

A
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2
Q

Convert to DMS, -345.12

A

D= -345, M= (12*60) = 7.20 S= (.20*60)= 12

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3
Q

Arc length, area of a sector, angular speed, linear speed?

A

MUST BE IN RADIANS ALWAYS!!!!

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4
Q

RPM?

A

make sure to convert to what its asking you, miles to feet.

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5
Q

Angular speed is always in ______

A

Radians per minute.

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6
Q

When doing area of a sector, the radius is____

A

the length they give you

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7
Q

Check the calculator to make sure it is in

A

radians or degrees!

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8
Q

Unit Circle, 30 degrees equals?

A

(radical 3/2, 1/2)

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9
Q

The shadow in a word problem is at the ______

A

BOTTOM

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10
Q

Reference Angle?

A

When finding a reference angle for a radian, the denominator must be equal on all 4 points (pi half, pi, 2pi, 3pi/2). This dtermines between which quadrant it is in. Then you subtract from the closest x axis!

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11
Q

When doing the radical of 2 numbers, just

A

leave it like that

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12
Q

Period =

A

amount of time it takes to complete one cycle

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13
Q

period=

A

2pi/b or 2pi/w

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14
Q

formula for harmonic motion?

A

asinwt or acoswt

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15
Q

frequency is the

A

reciprocal of the period!

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16
Q

When doing a bearing, you

A

make a compass at every degrees turn, and move clockwise from NORTH.

17
Q

SSA has

A

2 possible solutions

18
Q

When solving for another triangle…

A

you keep everything it gives you but change the top angle by subtracting it from 180, then check if it makes sense.

19
Q

When the graphs of a function are negative,

A

you change the max to min and the min to max

20
Q

Why is the tangent graph different?

A

the y values are UND, -a, int, a, UND

the cotangent graph simply changes the a signs.

Also, in tangent and cotangent, the period is pi/b, not 2pi/b.

21
Q

csc graph

A
22
Q

Sec graph

A