Midterm Review

Question 1

Formulas for linear speed?

Answer 1

Question 2

Convert to DMS, -345.12

Answer 2

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

Question 3

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

Answer 3

MUST BE IN RADIANS ALWAYS!!!!

Question 4

RPM?

Answer 4

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

Question 5

Angular speed is always in ______

Answer 5

Radians per minute.

Question 6

When doing area of a sector, the radius is____

Answer 6

the length they give you

Question 7

Check the calculator to make sure it is in

Answer 7

radians or degrees!

Question 8

Unit Circle, 30 degrees equals?

Answer 8

(radical 3/2, 1/2)

Question 9

The shadow in a word problem is at the ______

Answer 9

BOTTOM

Question 10

Reference Angle?

Answer 10

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!

Question 11

When doing the radical of 2 numbers, just

Answer 11

leave it like that

Question 12

Period =

Answer 12

amount of time it takes to complete one cycle

Question 13

period=

Answer 13

2pi/b or 2pi/w

Question 14

formula for harmonic motion?

Answer 14

asinwt or acoswt

Question 15

frequency is the

Answer 15

reciprocal of the period!

Question 16

When doing a bearing, you

Answer 16

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

Question 17

SSA has

Answer 17

2 possible solutions

Question 18

When solving for another triangle…

Answer 18

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

Question 19

When the graphs of a function are negative,

Answer 19

you change the max to min and the min to max

Question 20

Why is the tangent graph different?

Answer 20

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.

Question 21

csc graph

Answer 21

Question 22

Sec graph

Answer 22