Question

help me please? Alg 2/trig??

Answer 1

Freddie is at chess practice waiting on his opponent's next move. He notices that the 4-inch-long minute hand is rotating around the clock and marking off time like degrees on a unit circle.

Part 1: How many radians does the minute hand move from 3:35 to 3:55? (Hint: Find the number of degrees per minute first.)
Part 2: How far does the tip of the minute hand travel during that time?
Part 3: How many radians on the unit circle would the minute hand travel from 0° if it were to move 3π inches?
Part 4: What is the coordinate point associated with this radian measure?

You must show all of your work.

Answer 2

I found 2π/3 for part 1

Answer 3

do you know how to do the rest??
im completly lost

Answer 4

there are 2 pi radians in a full circle and the minute hand moves 20 minutes which is 1/3 of a circle or 120 degrees
this is 120pi/180 radians or 2pi/3 radians

Answer 5

{art 2
use the formula
length of arc = radius * angle in radaians
= 4 * 2pi/3

Answer 6

Part 3
again use the same formula

3Pi = 4 * C where C is the angle in radians

Answer 7

OK?

Answer 8

I won't give you the answers but i'll tell you if you are right

Answer 9

3pi/4 for part 4??

Answer 10

They want the coordinates in Part 4

Answer 11

in hte form (x,y)

Answer 12

what about part 2?

Answer 13

so what would the corrinates be? and part 2, 4*2pi /3 or 8pi/3

Answer 14

yes 8 pi/3 for part 2

Answer 15

remember that the hand is 4 ins long

Answer 16

im still so confused on the coorniate parts. it would look like the 3rd coordinate

Answer 17

Oh hold on sorry
the 3 pi is the actual distance travelled by the tip of the hand
you need to work out how many radians that is equivalent to
- thats the answer to part 3
what did you get for part 3?

Answer 18

2.355 is the angle

Answer 19

right or in terms of pi that's 3pi/4

Answer 20

ya

Answer 21

now lets mark that angle on the circle starting from 0 degrees

Answer 22

how do i do that

Answer 23

i'll try drawing again