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Flashcards in Midterm Review Deck (22)
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1

Formulas for linear speed?

 

2

Convert to DMS, -345.12

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

3

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

 

MUST BE IN RADIANS ALWAYS!!!!

4

RPM?

 

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

5

Angular speed is always in ______

 

Radians per minute.

6

When doing area of a sector, the radius is____

 

the length they give you

7

Check the calculator to make sure it is in

 

radians or degrees!

8

Unit Circle, 30 degrees equals?

(radical 3/2, 1/2)

9

The shadow in a word problem is at the ______

 

BOTTOM

10

Reference Angle?

 

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!

11

When doing the radical of 2 numbers, just

 

leave it like that

12

Period =

 

amount of time it takes to complete one cycle

13

period=

 

2pi/b or 2pi/w

14

formula for harmonic motion?

 

asinwt or acoswt

15

frequency is the

 

reciprocal of the period!

16

When doing a bearing, you

 

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

17

SSA has

 

2 possible solutions

18

When solving for another triangle...

 

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

19

When the graphs of a function are negative,

 

you change the max to min and the min to max

20

Why is the tangent graph different?

 

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

csc graph

22

Sec graph